Questions

This is a list of all the questions and their associated study carrel identifiers. One can learn a lot of the "aboutness" of a text simply by reading the questions.

identifier	question
37682	If no man ever thought himself to be avaricious, or cruel, can it be expected that any person should ever discover that he is too self- conceited?
29734	May not plants also restore air diminished by putrefaction by absorbing part of the phlogiston with which it is loaded?
29734	May not this phlogistic matter be even the most essential part of the food and support of both vegetable and animal bodies?
29734	May not water impregnated with phlogiston from calcined metals, or by any other method, be of some use in medicine?
29734	May we not presume that the same remedy would be equally useful in the DYSENTERY?
29734	Might it not however give additional efficacy to this remedy, if instead of simple water, the infusion of malt were to be employed?
30775	In what ratio does the mercury in the barometer descend in proportion to its elevation?
30775	Ought we then to conclude that the oils are the radicals of the vegetable and animal acids?
30775	or, what is the same thing, according to what law or ratio do the several strata of the atmosphere decrease in density?
46998	Are they owing to its quality of Lime?
46998	But may we not suppose it to have another origin?
46998	But to what must we attribute these effects produced by Lime, so different from those produced by Fixed Alkalis?
46998	But what Oil?
46998	Can it be a substance of the same nature with Æther, a kind of solid Æther, an Æther in a concrete form?
46998	Can this arise from hence, that Cream of Tartar, after dissolving a certain quantity of the reguline substance, separates from it afterwards?
46998	For how are vegetable substances converted into Chyle and Milk in an animal body?
46998	May it not be the Acid of the Spirit of Wine itself, resulting from the decomposition of that mixt in the distillation?
46998	May it not be the Marine Acid, but altered by the union it has contracted with the Phlogiston?
46998	Now whence can this difference arise?
46998	Or is the Cream of Tartar itself decomposed by too long boiling?
46998	Or may it not be, with respect to Phosphorus, what the volatile sulphureous spirit is, with respect to Sulphur?
46998	What Acid?
46998	What is it that is kindled in this case?
46998	What must be the consequence, therefore, of mixing these two saline matters together?
46998	What then is this singular body?
46998	Why doth this Oil take fire?
46998	Why then, in this experiment of Mr. Hellot''s, do we obtain only a Spirit of Wine replete with Æther, while none of the other productions appear?
46998	and how are they united?
46998	or would it produce the same, if it were only a mere Absorbent Earth?
51326	148||||||| V.|?
51326	But to what does this point?
51326	But what would be the result if it were mixed with CCl_{4}?
51326	By what are we to be guided in ascribing to some metals univalency and to others bi-, ter-, quadri-,..._ n_-valency?
51326	CHAPTER II THE COMPOSITION OF WATER, HYDROGEN The question now arises, Is not_ water_ itself a_ compound substance_?
51326	Can not it be broken up into its component parts?
51326	Can not it be formed by the mutual combination of some component parts?
51326	In what, besides the extra store of energy, which is one of the peculiarities of ozone, resides the cause of its difference from oxygen?
51326	It may be asked, what became of the compounds of potassium in the disintegration of the primary rocks, if so small a quantity went to the sea water?
51326	Now, how much gas will remain in the liquid and how much will pass over into the surrounding atmosphere?
51326	On what are the isomerism of ozone and oxygen, and the peculiarities of ozone, dependent?
51326	The question now arises, to what height does the piston rise under these circumstances?
51326	These combinations were so expressed formerly-- why has this since been changed?
51326	What conclusion, then, can be arrived at?
51326	What obliges us to make this difference?
51326	What will be the volume of dry gas at 0 ° and 760 mm.?
51326	Why are not all metals given the same valency-- for instance, why is not magnesium considered as univalent?
51326	that is, in other words, What is the volume occupied by the steam under a known pressure?
51326	| Ce 140|?
51326	|| F 19| Mn 55|?
4524	Can the art of agriculture be based upon anything but the restitution of a disturbed equilibrium?
4524	Did not the fields of Virginia receive their nitrogen from the same source as wild plants?
4524	From what substances, it may be asked, is the blood formed, by means of which of their organs are developed?
4524	How does it happen that these substances are indispensable to life?
4524	If the metal seeds were once obtained, might they not entertain hopes of their growth?
4524	Is it possible that the nitrogen essential to, and entering into, the composition of these crops, could have been drawn from the soil?
4524	Should not the fertility, resulting from their application, be altogether independent of the ammonia they contain?
4524	This nitrogen is not supplied by man, can it indeed be derived from any other source than the atmosphere?
4524	What is the reason one kind of plant succeeds in a field where another fails?
4524	What is the reason that a field loses its fertility for one plant, the same which at first flourished there?
4524	What nourishment can this draw from a naked rock, upon the surface of which there is no perceptible change?
4524	What then is the rationale of the effect of manure,--of the solid and fluid excrements of animals?
4524	What, it may be asked, has become of the enormous amount of oxygen thus introduced into the human system in the course of one year?
4524	What, then, is the use of the butter and the sugar of milk?
22914	And if I know not how Purgation in general is effected in a Humane Body?
22914	And, partly, because it seems doubtfull whether the same Ingredients may not be call''d_ Principles_?
22914	But further to invalidate his supposition, I shall demand, upon what Chymical Principle Fluidity depends?
22914	For what does it teach us, either of the Nature of the Sun, which Astronomers affirme to be eight- score and odd times bigger then the whole Earth?
22914	How does this Hypothesis shew us, how much Salt, how much Sulphur, and how much Mercury must be taken to make a Chick or a Pompion?
22914	If the whole Body were Eye, where were the Hearing?
22914	If you should ask me( continues_ Eleutherius_) what Reasons I mean?
14218	What prerogative have vegetables above metals,exclaims one of them,"that God should give seed to the one and withhold it from the other?
14218	''You do not reside in Messina, signor?''
14218	Are electrons normal constituents of all elementary atoms?
14218	Are elementary atoms collocations of electrons?
14218	Are not metals as much in His sight as trees?"
14218	Are not the choicest fables of the poets, That were the fountains and first springs of wisdom, Wrapp''d in perplexed allegories?
14218	Are the words I have quoted unintelligible, like the parrot''s prating?
14218	But how is such a restoration of phlogiston to be accomplished?
14218	Can the atoms of all the elements be caused to give off electrons?
14218	How, then, was the transmutation to be accomplished?
14218	In his explanation(?)
14218	In_ A Catechism of Alchemy_, Paracelsus asks:"What road should the philosopher follow?"
14218	Is matter fundamentally homogeneous or heterogeneous?
14218	Is this not to perform the miracle of the resurrection?
14218	Plato gives him certain directions, and tells him he must use_ magnasia_; the disciple asks--''What is Magnasia, good sire, I yow preye?''
14218	Radio- active substances, are they elements?
14218	Rogue, where are my sixty ounces of gold?"
14218	Shall reason, founded on false sense, be able to contradict[ the senses], wholly founded as it is on the senses?
14218	Sholde it ellis be?
14218	Speak not the Scriptures oft in parables?
14218	Was not all the knowledge Of the Egyptians writ in mystic symbols?
14218	Was not that want the necessity for the realisation of order in the universe?
14218	What happens when a substance is burnt in the air?
14218	What is the perfection of the common metals?
14218	What more simple than to conclude that the iron has been transformed into copper?
14218	Why did the alchemists so untiringly pursue their quest?
14218	Why does the chemist toil so eagerly?
14218	_ Conclusion_.--The lead has vanished; what more natural than the conclusion that it has been transformed into silver?
14218	_ See p. 91._] What kind of experimental evidence could an alchemist furnish in support of his theory of transmutation?
54210	( Does it not contain a nitride?)
54210	(_ tc_)(_ pc_)_ t__ t__{1}_ s_ N_{2}-146 ° 35-194 ° ·4-214 ° 0·885 CO-139 ° ·5 35·5-190 °-207?
54210	), K_{2}O_{4}, K_{2}O_{2}, CaO_{2}, TiO_{3}, Cr_{2}O_{7}, CuO_{2}(?
54210	), and osmium(?
54210	1·124 NO-93 ° ·5 71·2-153 ° ·6-167 °?
54210	A-121 ° 50·6-187 °-189 ° ·6 1·5 O_{2}-118 ° ·8 50·8-182 ° ·7?
54210	But an acquaintance with them inevitably leads to the questions, what is the cause of analogy and what is the relation of one group to another?
54210	Does not this tend to show that the condition of our globe is very different from that of the rest?
54210	For example, the light metals, and copper and silver( especially with the access of air?)
54210	H_{3}PO(?)
54210	H_{4}CO HClO_{2} H_{2}SO_{2}(?)
54210	In Table III., besides the large periods whose maxima correspond with carbon, silicon, titanium, ruthenium(?
54210	Is it long since many refused to accept the generalisations involved in the law of Avogadro and Ampère, so widely extended by Gerhardt?
54210	Mg Al Si P S Cl K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Rb Sr Y Zr Nb Mo-- Ru Rh Pd Ag Cd In Sn Sb Te I Cs Ba La Ce Di?
54210	Molybdenum gives the chlorine compounds, MOCl_{2}, MOCl_{3}(?
54210	Of the_ peroxides_ corresponding with hydrogen peroxide, the following are at present known: H_{2}O_{2}, Na_{2}O_{2}, S_{2}O_{7}( as HSO_{4}?
54210	Otherwise, how could unity result in a multitude?
54210	The data are given in the same manner as in the above- mentioned note: R= Cu Ag Au R+ Cl+33+29+6 R+ Br+25+23 0 R+ I+16+14-6 R+ O+41+ 6-?
54210	The question is, what will then occur?
54210	The question presents itself as to whether phosphorus in a state of vapour is the ordinary or some other variety?
54210	What were the regions touched on by the periodic law?
54210	When argon had been isolated the question naturally arose, was it a new homogeneous substance having definite properties or was it a mixture of gases?
54210	with the sign(?
54210	{ CuCl 434 ° ZnCl_{2} 262 ° GaCl_{3} 76 °{( 993 °)( 680 °)( 217 °) AgCl 451 ° CdCl_{2} 541 ° InCl_{3}?
54210	|||--|--| 6·1| 23|?
54210	|||--|--| 6·6| 21| 700 °?||||||||||--|Ta_{n}H*|10·4| 18|?
38246	What''s in a name?
38246	*****_ Sub._ And what''s your mercury?
38246	But how was this assumption to be proved or disproved?
38246	But if this be so, why, he asked, does not water mechanically dissolve the same bulk of every kind of gas?
38246	But what, one may ask, is an alkali, of which mention is so often made by Boyle?
38246	But why does rapid burning only take place in air?
38246	But why is it that certain elementary atoms exhibit affinity for certain others?
38246	He seemed, therefore, to have a large experimental basis for his answer to the question,"What happens when a substance burns?"
38246	How was this number obtained?
38246	Let us shortly review Priestley''s answer to the question,"What happens when a substance burns in air?"
38246	Might he not triumphantly assert that he had transmuted lead into silver?
38246	Now, could you be at my disposal, say from six in the morning till midnight?''"
38246	Or, again, what could any reasonable man make of this?
38246	Or, when two compounds are known containing the same pair of elements, why must one be binary and the other ternary?
38246	The old difficulty still stares us in the face-- how can we find the number of elementary atoms in the molecule of a given compound?
38246	What could this experiment teach save that water was changed into earth and air?
38246	What is this but common air completely deprived of phlogiston?
38246	What then becomes of this phlogiston?
38246	What then, he asks, is this"principle"which can so escape, and be so restored by the action of various substances?
38246	Why may it not be ternary or quaternary?
38246	Why must the atom of water be built up of one atom of hydrogen combined with one atom of oxygen?
38246	Will you act as my cicerone?
38246	_ Sub._ And when comes vivification?
38246	_ Sub._ How know you him?
38246	_ Sub._ What''s cohobation?
38246	_ Why_ are acids acid, and_ why_ are alkalis alkaline?
38246	and has he not also been taught that every honest effort made to extend the boundaries of natural knowledge must advance that knowledge a little way?
38246	and, What can this compound do; how does it react towards other bodies?
14474	What happens?
14474	Am I right in supposing that anybody here has played at snapdragon?
14474	And going out, why?
14474	And how are these candles made?
14474	And what do you think the bulk of that water is when it assumes the vaporous condition?
14474	And where does all this go?
14474	And you might say,"It is nothing; it is not worth chemical attention; what does it do in the air?"
14474	And, now that I have immersed it in spirit and applied a light to it, in what way does it differ from an ordinary candle?
14474	But can it be steam?
14474	But how does the flame get hold of the fuel?
14474	But if I shut it off, what becomes of the lamp?
14474	But is there nothing else there than nitrogen?
14474	But then you have a right to ask me,"How is it that the air and the oxygen do not equally well burn the candle?"
14474	But then, beyond that, how is it that the candle does not burn in air as well as in oxygen?
14474	But what can this be which we find as the other constituent in water, and which must therefore be that substance which made the hydrogen burn?
14474	But what is that black substance?
14474	But what will you say when I tell you that my breath will put out that candle?
14474	But why does it not burn in that way now, when it is lying in a mass?
14474	But, now, what will you think of this fact?
14474	By what?
14474	Can we get it from the air?
14474	Could you do that?
14474	Did you see that brilliant light?
14474	Do I get carbonic acid?
14474	Do you not see that it is_ not_ in the inside?
14474	Do you remember this kind of experiment?
14474	Do you see that the water has become quite milky?
14474	Do you see what happens?
14474	Does not that shew you what a large bulk of matter is being evolved?
14474	Have you ever seen it?
14474	Here it is seeming to boil up famously; but does it boil?
14474	How burned?
14474	How comes it out of the candle?
14474	How is it that this solid gets there, it not being a fluid?
14474	How shall we get at this?
14474	If I shut the air off, look how it smokes; and why?
14474	If the carbon had been like the lead which I shewed you, or the iron which, in burning, produces a solid substance, what would happen?
14474	Is it anything else?
14474	Is it hydrogen?
14474	Is it not beautiful to think that such a process is going on, and that such a dirty thing as charcoal can become so incandescent?
14474	Is not that a very pretty experiment?
14474	It evidently comes, as to part of it, from the candle; but is it within the candle beforehand?
14474	Now, I have no doubt you will ask, how is it that the oil, which will not burn of itself, gets up to the top of the cotton, where it will burn?
14474	Now, what is the circumstance which makes the lead and carbon differ in this respect?
14474	Now, why is this?
14474	Now, why is this?
14474	Oxygen, as you will immediately imagine, exists in the atmosphere; for how should the candle burn to produce water without it?
14474	Suppose I take this candle, and hold a piece of paper close upon the flame, where is the heat of that flame?
14474	Suppose, in place of having nitrogen, or nitrogen and oxygen, we had pure oxygen as our atmosphere; what would become of us?
14474	Then, what becomes of it?
14474	There is our candle burning in the air: how will it burn in oxygen?
14474	There it is standing over the water, and it can not therefore be steam, but must be a permanent gas of some sort What is it?
14474	This is a very combustible substance; and if it be so combustible in air, what might you expect it would be in oxygen?
14474	This is the first part of our experiment; and now, what follows?
14474	We find one of these is hydrogen: what must that other be which was in the water before the experiment, and which we now have by itself?
14474	What diamond can shine like flame?
14474	What do you think of the contents of that box above there, which I have had made for the purpose?
14474	What is all that smoke?
14474	What is its nature?
14474	What is set free when I put it in the water, as I am about to do again?
14474	What shall we call it, A, B, or C?
14474	What, then, are the comparative weights of these substances?
14474	What, then, is happening?
14474	When you have put the spirit into the dish, you have the cup and the fuel; and are not the raisins acting like the wicks?
14474	Where, then, is this water which we get from a candle?
14474	Why does a piece of potassium decompose water?
14474	Why does it hold?
14474	Why does it occur?"
14474	Why is my hand fastened to this place, and why am I able to pull this pump about?
14474	Why is that?
14474	Why is this?
14474	Why?
14474	You have asked me several times, and I am very glad you have,"How do you weigh gases?"
14474	You have here a solid substance with no vessel to contain it; and how is it that this solid substance can get up to the place where the flame is?
14474	You would be puzzled for a good while if I asked you what the state of this vessel is, what is inside it, and why it is there?
14474	[ A light was then applied, when the hydrogen burnt] What is there now in the other jar?
14474	how is it that I can hardly get my hand away?
14474	or, when it is made a fluid, then how is it that it keeps together?
20848	( a) 10 g. of common salt were dissolved in water and the solution evaporated to dryness; what weight of solid was left?
20848	( a) Does dry sulphur dioxide react with litmus paper?
20848	( a) How many cubic centimeters of aqueous vapor are formed?
20848	( a) How many grams of the substance remained in solution?
20848	( a) In what respects does the use of the Welsbach mantle resemble that of lime in the calcium light?
20848	( a) What is the formula for antimony chloride?
20848	( a) What is the weight of 100 l. of hydrogen measured in a laboratory in which the temperature is 20 ° and pressure 750 mm.?
20848	( a) What two sulphur compounds are likely to be formed when gas is made from such coal?
20848	( a) What weight of hydrogen can be obtained from 150 g. of sulphuric acid?
20848	( a) What weight of oxygen can be obtained from 100 g. of water?
20848	( a) What weight of water can be formed by the combustion of 100 L of hydrogen, measured under standard conditions?
20848	( a) When a given weight of water freezes, does it absorb or evolve heat?
20848	( a) Why does not the water of the ocean freeze?
20848	( a) Would the same amount of heat be generated by the combustion of 1 g. of each of the allotropic modifications of sulphur?
20848	( b) 10 g. of zinc were dissolved in hydrochloric acid and the solution evaporated to dryness; what weight of solid was left?
20848	( b) How can it be shown that a solution of sulphur dioxide in water acts like an acid?
20848	( b) If the mantle were made of carbon, would it serve the same purpose?
20848	( b) In what respects are the reactions similar?
20848	( b) What gas and how much of it remains in excess?
20848	( b) What important law does this series of substances illustrate?
20848	( b) What volume would this occupy under standard conditions?
20848	( b) What volume would this occupy under standard conditions?
20848	( b) What volume would this occupy under standard conditions?
20848	( b) What was the strength of the solution at 18 °?
20848	( b) What was the volume of each?
20848	( b) What weight of sulphuric acid is necessary to prepare this amount of hydrogen?
20848	( b) When the resulting ice melts, is the total heat change the same or different from that of freezing?
20848	( b) Why will ice and salt produce a lower temperature than ice alone?
20848	( b) Would the same amount of sulphur dioxide be formed in each case?
20848	( b)What volume of oxygen would be required in( a)?
20848	( c) How much water had been used in the experiment?
20848	( c) How would you account for the color of the copper sulphate solution?
20848	( c)What weight of potassium chlorate is necessary to prepare this amount of oxygen?
20848	10 g. of zinc were used in the preparation of hydrogen; what weight of iron will be required to prepare an equal volume?
20848	12, why is it necessary to dry the hydrogen by means of the calcium chloride in the tube X?
20848	14, will the flame remain at the mouth of the tube?
20848	24)?
20848	= 1.2) to be worth six cents a pound, what is the value of the acid generated in the preparation of 1 ton of sodium carbonate by the Le Blanc process?
20848	Apart from its color, why should carbon be useful in the preparation of inks and paints?
20848	Are lampblack and bone black allotropic forms of carbon?
20848	Are your results in accord with the experimental facts?
20848	As ordinarily carried out, does the reaction complete itself?
20848	At what pressure would the weight of 1 l. of hydrogen be equal to that of oxygen under standard conditions?
20848	At what temperature will its volume be doubled?
20848	Can a metal itself be an alkali?
20848	Can ammonia be dried by passing the gas through concentrated sulphuric acid?
20848	Can combustion take place without the emission of light?
20848	Can sulphuric acid be used to dry hydrosulphuric acid?
20848	Can you suggest any reason why the growth of clover in a field improves the soil?
20848	Cl_{2}O is the anhydride of what acid?
20848	Could a solution of sodium hydroxide be substituted for the solution of calcium hydroxide in testing for carbon dioxide?
20848	Could asbestos fibers be used to replace the wire in a safety lamp?
20848	Could barium hydroxide be used in place of calcium hydroxide in testing for carbon dioxide?
20848	Could calcium chloride be used in place of barium chloride in testing for sulphates?
20848	Could lead nitrate be used in place of barium chloride in testing for sulphates?
20848	Could limestone be completely decomposed if heated in a closed vessel?
20848	Could phosphoric acid be substituted for sulphuric acid in the preparation of the common acids?
20848	Does dry hydrosulphuric acid react with litmus paper?
20848	Does this color increase in intensity on standing?
20848	For what is calcium chlorate used?
20848	From the method of preparation of platinum, what metal is likely to be alloyed with it?
20848	From their behavior toward sulphuric acid, to what class of agents do hydrobromic and hydriodic acids belong?
20848	How can bromine vapor and nitrogen peroxide be distinguished from each other?
20848	How can you prove that the composition of the different allotropic forms of carbon is the same?
20848	How could the amount of water in a food such as bread or potato be determined?
20848	How could the presence of air dissolved in water be detected?
20848	How could you detect arsenic, antimony, or copper in lead?
20848	How could you detect lead if present in tin foil?
20848	How could you determine the total amount of solid matter dissolved in a sample of water?
20848	How could you determine whether a given sample of water is distilled water?
20848	How could you distinguish between a chloride, a bromide, and an iodide?
20848	How could you distinguish between carbonates and sulphites?
20848	How could you distinguish between magnesium chloride and magnesium sulphate?
20848	How could you distinguish between mercurous chloride and mercuric chloride?
20848	How could you distinguish between oxygen, hydrogen, and nitrogen?
20848	How could you distinguish between oxygen, hydrogen, nitrogen, nitrous oxide, and carbon dioxide?
20848	How could you distinguish between potassium chloride and potassium iodide?
20848	How could you distinguish between them?
20848	How could you judge of the relative purity of different forms of carbon?
20848	How could you prepare pure silver chloride from a silver coin?
20848	How could you prove that the water in crystals of common salt is not water of crystallization?
20848	How could you prove the formation of carbon dioxide and water in the combustion of illuminating gases?
20848	How do we account for the fact that liquid hydrofluoric acid is not an electrolyte?
20848	How do you account for the difference?
20848	How do you account for the fact that a candle burns with a flame?
20848	How do you account for the fact that a precipitate of silver chloride is not formed?
20848	How do you account for the flame sometimes observed when it burns?
20848	How do you explain the foaming of soda water?
20848	How does pyrolusite effect the decolorizing of glass containing iron?
20848	How is this accounted for?
20848	How many liters of hydrogen measured under standard conditions can be obtained from the action of 8 g. of iron on 10 g. of sulphuric acid?
20848	How many liters of nitrous oxide, measured under standard conditions, can be prepared from 10 g. of ammonium nitrate?
20848	How much iron sulphate( FeSO_{4}) will be formed?
20848	How much of each substance had been used?
20848	How much water by weight would result?
20848	How much zinc sulphate will be formed?
20848	How would you account for the fact that normal copper sulphate is slightly acid to litmus?
20848	How would you account for the fact that solutions of the different salts of a metal usually have the same color?
20848	How would you expect potassium aurate and platinate to be formed?
20848	If 10 l. of air, measured under standard conditions, is passed over 100 g. of hot copper, how much will the copper gain in weight?
20848	If arsenopyrite is heated in a current of air, what products are formed?
20848	If steam is heated to 2000 ° and again cooled, has any chemical change taken place in the steam?
20848	If the Gay- Lussac tower were omitted from the sulphuric acid factory, what effect would this have on the cost of production of sulphuric acid?
20848	In the amalgamation process for extracting silver, how does ferrous chloride convert silver chloride into silver?
20848	In the commercial preparation of carbon disulphide, what is the function of the electric current?
20848	In the decomposition of this weight of the dioxide into water and oxygen, what volume of oxygen( measured under standard conditions) is evolved?
20848	In the manufacture of cast iron, why is the air heated before being forced into the furnace?
20848	In the preparation of nitrogen from the air, how would hydrogen do as a substance for the removal of the oxygen?
20848	In the preparation of phosphine, why is coal gas passed into the flask?
20848	In what proportion must acetylene and oxygen be mixed to produce the greatest explosion?
20848	In what respects are carbonic and sulphurous acids similar?
20848	In what respects are these elements similar?
20848	In what respects do they differ?
20848	In what respects does aluminium oxide differ from calcium oxide in properties?
20848	In what respects does nitrogen resemble the members of the phosphorus family?
20848	Is a chemical change always accompanied by a physical change?
20848	Is a physical change always accompanied by a chemical change?
20848	Is it possible for a substance to contain both mechanically inclosed water and water of crystallization?
20848	Is oxidation always accompanied by reduction?
20848	Is the equation for the preparation of hydrosulphuric acid a reversible one?
20848	Is the evolution of light always produced by combustion?
20848	Is the molecule and the atom of oxygen the same thing?
20848	Is the reaction expressed by the equation 2H+ O= H_{2}O reversible?
20848	Is the reaction expressed by the equation NH_{3}+ H_{2}O= NH_{4}OH reversible?
20848	Sulphur and oxygen both belong in Group VI, although in different families; in what respects are the two similar?
20848	Suppose that an element were discovered that filled the blank in Group O, Period 5; what properties would it probably have?
20848	Suppose that an element were discovered that filled the blank in Group VI, Period 9, family B; what properties would it have?
20848	Suppose that hydrosulphuric acid were a liquid, would it be necessary to modify the method of preparation?
20848	Suppose that the maximum density of water were at 0 ° in place of 4 °; what effect would this have on the formation of ice on bodies of water?
20848	The question arises then, How can we account for the difference in their properties?
20848	The question arises, Do these substances in turn contain other substances, that is, are they also chemical compounds?
20848	The test question in all cases is, Has the composition of the substance been changed?
20848	To what class of changes do the following belong?
20848	To what is the bleaching action due in each case?
20848	To what is the blue color due?
20848	To what is the blue color of liquid air due?
20848	What acid should be used?
20848	What are the products of hydrolysis when stannic chloride is used as a mordant?
20848	What carbonates are soluble?
20848	What component is present in concentrated sulphuric acid that is almost wanting in very dilute sulphuric acid?
20848	What compound would be formed by passing carbon dioxide into a solution of ammonium hydroxide?
20848	What compounds would you expect phosphorus to form with bromine and iodine?
20848	What effect would doubling the pressure have upon the solubility of carbon dioxide in water?
20848	What essential constituent of the air is found in larger amount in manufacturing districts than in the open country?
20848	What hydroxide studied, other than zinc hydroxide, has both acid and basic properties?
20848	What hydroxides other than aluminium hydroxide have both acid and basic properties?
20848	What important point does this suggest?
20848	What impurities would you expect to find in the copper sulphate prepared from the refining of silver?
20848	What is an alkali?
20848	What is formed when a metal dissolves in each of the following?
20848	What is meant by the statement that hydrochloric acid is one of the strongest acids?
20848	What is meant by the term polysilicic acid, as used in the discussion of aluminium silicates?
20848	What is the compound?
20848	What is the derivation of the word nascent?
20848	What is the exact use of lime in this instrument?
20848	What is the meaning of the following words?
20848	What is the meaning of the phrase_ aqua regia_?
20848	What is the minimum weight of carbon which must be added in order that the steel may be made to take a temper?
20848	What is the significance of the term fluorspar?
20848	What is the source of heat in the lime light?
20848	What metals already studied are prepared by electrolysis?
20848	What metals and compounds studied are prepared by electrolysis?
20848	What non- metallic element is obtained from the deposits of Chili saltpeter?
20848	What other chlorides would act in the same way?
20848	What other gases would serve the same purpose?
20848	What precautions would this suggest in the use of platinum vessels?
20848	What products were left in the flask, and how much of each was present?
20848	What properties have the alkaline- earth metals in common with the alkali metals?
20848	What properties have the metals of the magnesium family in common with the alkali metals; with the alkaline- earth metals?
20848	What property of magnesium was taken advantage of in the isolation of argon?
20848	What reaction would you expect to take place when lead peroxide is treated with hydrochloric acid?
20848	What substances already studied are prepared from the following compounds?
20848	What substances studied are used as bleaching agents?
20848	What substances studied are used as disinfecting agents?
20848	What substances were formed and how much of each?
20848	What sulphates other than lead are insoluble?
20848	What test question must be applied in each of the above cases?
20848	What two properties must the mantle used in the Welsbach lamp possess?
20848	What volume of oxygen will be given off at the same time, measured under standard conditions?
20848	What volume would it occupy if the atmospheric pressure changed so that the reading became 750 mm.?
20848	What volume would the 150 g. of the acid occupy?
20848	What volume would this gas occupy under standard conditions?
20848	What volume would this occupy under standard conditions?
20848	What was the strength of the acid solution?
20848	What was the strength of the sodium hydroxide solution in parts per hundred?
20848	What weight of ammonium chloride is necessary to furnish enough ammonia to saturate 1 l. of water at 0 ° and 760 mm.?
20848	What weight of barium sulphate will be formed at the same time?
20848	What weight of carnallite is necessary in the preparation of 500 g. of magnesium?
20848	What weight of carnallite would be necessary in the preparation of 1 ton of potassium carbonate?
20848	What weight of copper is necessary to prepare 50 l. of nitric oxide under standard conditions?
20848	What weight of each of the following compounds is necessary to prepare 50 l. of oxygen?
20848	What weight of ferrochromium containing 40% chromium must be added to a ton of steel to produce an alloy containing 1% of chromium?
20848	What weight of gypsum is necessary in the preparation of 1 ton of plaster of Paris?
20848	What weight of nitrogen can be obtained from 10 l. of air measured under the conditions of temperature and pressure which prevail in your laboratory?
20848	What weight of potassium chlorate is necessary to prepare 250 l. of oxygen at 20 ° and 750 mm.?
20848	What weight of potassium nitrate is necessary to furnish the same weight of acid?
20848	What weight of sodium chloride is necessary to prepare sufficient hydrochloric acid to saturate 1 l. of water under standard conditions?
20848	What weight of sodium hydroxide is necessary to neutralize the carbonic acid formed by the action of hydrochloric acid on 100 g. of calcium carbonate?
20848	What weight of the compound Mn_{3}O_{4} will be formed by strongly heating 25 g. of manganese dioxide?
20848	What weight of the permanganate was required?
20848	What weight of tin could be obtained by the reduction of 1 ton of cassiterite?
20848	What weight of water can be obtained from 150 g. of this substance?
20848	What weight of water is necessary to slake the lime obtained from 1 ton of pure calcium carbonate?
20848	What weight of zinc can be dissolved in 10 g. of sulphuric acid?
20848	What would become of these metals in refining by parting with sulphuric acid?
20848	What would take place if a bit of potassium hydroxide were left exposed to the air?
20848	What would take place when solutions of silver nitrate and sodium chloride are brought together?
20848	When this solution is treated with zinc, will hydrogen be evolved?
20848	Why are the inner walls of a Dewar bulb sometimes coated with a film of silver?
20848	Why did Dalton assume that all the atoms of a given element have the same weight?
20848	Why do most acids decompose carbonates?
20848	Why does a solution of disodium hydrogen phosphate react alkaline?
20848	Why does charcoal usually burn with no flame?
20848	Why does shaking or stirring make a solid dissolve more rapidly in a liquid?
20848	Why does sulphuric acid liberate hydrofluoric acid from its salts?
20848	Why does the chemist use distilled water in making solutions, rather than filtered water?
20848	Why does the use of the bellows on the blacksmith''s forge cause a more intense heat?
20848	Why does the water from some natural springs effervesce?
20848	Why is brine used in the manufacture of artificial ice?
20848	Why is lead so extensively used for making water pipes?
20848	Why is oxygen passed through the inner tube of the oxyhydrogen blowpipe rather than the outer?
20848	Why is the silver sulphide first changed into silver chloride?
20848	Why must chlorine water be kept in the dark?
20848	Why must gold ores be roasted in the chlorination process?
20848	Why will vegetables cook faster when boiled in strong salt water than when boiled in pure water?
20848	Will a definite weight of iron decompose an unlimited weight of steam?
20848	Will equal amounts of heat be liberated in the combustion of 1 g. of each?
20848	Would anthracite coal be suitable for the manufacture of coal gas?
20848	Would combustion be more intense in liquid air than in the gaseous substance?
20848	Would ice frozen from impure water necessarily be free from disease germs?
20848	and the temperature 0 °?
20848	between Glauber''s salts and Epsom salts?
20848	between sodium chloride and ammonium chloride?
20848	between sodium nitrate and potassium nitrate?
20848	bottles in your laboratory( the gas to be collected over water)?
20848	of 98% sulphuric acid?
20848	of aluminium?
20848	of borax contain?
20848	of carbon dioxide at 20 ° and 750 mm.?
20848	of commercial nitric acid?
20848	of common hydrogen dioxide solution?
20848	of copper in sulphuric acid and crystallizing the product from water?
20848	of mercuric oxide?
20848	of minium?
20848	of oxygen was exploded in a eudiometer,( a) What gases remained in the tube after the explosion?
20848	of phosphorus?
20848	of sodium sulphite?
20848	of sulphuric acid having a density of 1.84?
20848	of the anhydrous salt yield?
20848	of the ordinary hydrogen dioxide solution?
20848	pressure?