Elementary Chemistry |
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Page 6
... definite kind of matter , distinguished from other kinds by its lustre , greyish purple colour , opacity , easy solu- bility in alcohol with production of a reddish brown liquid , and by the fact that when a drop or two of this liquid ...
... definite kind of matter , distinguished from other kinds by its lustre , greyish purple colour , opacity , easy solu- bility in alcohol with production of a reddish brown liquid , and by the fact that when a drop or two of this liquid ...
Page 7
... definite kinds of matter ; each is evidently very different from the water from which both have been produced . The change of water into the gases hydrogen and oxygen is a chemical change . A few pieces of loaf - sugar are placed in a ...
... definite kinds of matter ; each is evidently very different from the water from which both have been produced . The change of water into the gases hydrogen and oxygen is a chemical change . A few pieces of loaf - sugar are placed in a ...
Page 10
... definite meaning is to be put upon the statement water can be changed into hydrogen and oxygen ? The history of alchemy , and of the transition from alchemy to chemistry , teaches the necessity of putting , and of answering , such ...
... definite meaning is to be put upon the statement water can be changed into hydrogen and oxygen ? The history of alchemy , and of the transition from alchemy to chemistry , teaches the necessity of putting , and of answering , such ...
Page 12
... definite meaning to the terms ' pro- duced ' and ' disappeared ' , as regards the change of magnesium to magnesia at any rate ; and we should , to some extent at least , understand what is meant by saying the magnesia has taken the ...
... definite meaning to the terms ' pro- duced ' and ' disappeared ' , as regards the change of magnesium to magnesia at any rate ; and we should , to some extent at least , understand what is meant by saying the magnesia has taken the ...
Page 14
... definite and accurate meaning can be given to this and similar expres- sions only when we have learned more about chemical occur- rences . In the preceding paragraphs the important truth has been assumed that the one fundamental ...
... definite and accurate meaning can be given to this and similar expres- sions only when we have learned more about chemical occur- rences . In the preceding paragraphs the important truth has been assumed that the one fundamental ...
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Common terms and phrases
acids to form affinity alcohol alkali allotropy ammonia ammonium antimony aqueous solution atom of carbon atom of hydrogen atom of oxygen atomic theory atomic weight basic oxides bismuth bromine Chap chemical change chemical properties chlorine chromium combining weight composed composition copper decomposed definite directly interacting elements and compounds energy expressed form salts gaseous molecules gases gasified grams H₂O H₂SO haloid compounds heat hydrides hydrochloric acid hydrogen and oxygen hydrogen chloride hydroxide interact with acids iodine iron kinds of matter liquid M₂O magnesium mass mercury metals mixture molecular and atomic molecular weight nitric acid nitrogen non-metallic obtained occur oxidised oxygen phosphorus physical potash potassium chloride produced quantity ratio reacting weight reactions represented rubidium selenion shew shewn sodium solid specific gravity structural formulae substances sulphate sulphide sulphuric acid tellurium temperature Thallium tube valency weight of hydrogen weight of oxygen zinc
Popular passages
Page 73 - The fact that two volumes of hydrogen combine with one volume of oxygen to form...
Page 265 - ... the eighth element starting from a given one is a kind of repetition of the first, like the eighth note of an octave in music.
Page 196 - Now it is one great object of this work, to show the importance and advantage of ascertaining the relative weights of the ultimate particles, both of simple and compound bodies, the number of simple elementary particles which constitute one compound particle, and the number of less compound particles which enter into the formation of one more compound particle.
Page 11 - That there abides in nature a certain pure matter, which, being discovered and brought by art to perfection, converts to itself proportionally all imperfect bodies that it touches.
Page 182 - The total energy of any body or system of bodies is a quantity which can neither be increased nor diminished by any mutual action of such bodies, though it may be transformed into any one of the forms of which energy is susceptible.
Page 197 - When only one combination of two bodies can be obtained, it must be presumed to be a binary one, unless some cause appear to the contrary.
Page 175 - Waage formulate the law of mass thus chemical action is proportional to the active mass of each substance taking part in the change.
Page 192 - And it often makes a great difference with what things and in what position the same first-beginnings are held in union and what motions they mutually impart and receive...
Page 49 - Dalton, all substances combine in definite proportions or "equivalents" ; thus, 1 part by weight of hydrogen combines with 8 parts by weight of oxygen to form water.