A Graduated Course of Natural Science, Experimental and Theoretical for Schools and Colleges; Part I.-[Ii]. (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1889 Excerpt: ... action itself is a G reduction, and is clearly the very opposite of an oxidation; that is, the kind of action of which we have seen instances in former experiments, and again in Experiment 6, when copper was heated in air. Both are chemical actions; and two very important classes of chemical action, which the experiments of this chapter are presenting in a very striking way, are the breaking up by some means of a body called a compound, and possessing certain properties, into other simple bodies having different properties; and the uniting such simple bodies differing from one another in most or all respects to produce a new body differing altogether from the simpler bodies of which it is made up.. QUESTIONS ON CHAPTER XVI 1. What is observed when sodium is placed under water? What is the name of the gas produced? 2. State the principal properties of the gas, and how they are proved by our experiments. 3. How do our experiments prove that water is a compound of oxygen and hydrogen? 4. Describe fully what happens when steam is passed over heated iron. Sketch and describe the apparatus used. 5. Describe three different ways of preparing hydrogen. How is it usually prepared on a large scale 1 6. Sketch and describe the apparatus used for passing hydrogen over copper oxide. 7. What is meant by reduction? How does it differ from oxidation? Give examples of either. 8. Give examples of chemical actions, and explain why you call them chemical actions. 9. Compare the properties of steam, hydrogen, and nitrogen; pointing out those properties in which they agree, and those in which they differ. CHAPTER XVII THE BURNING OF A CANDLE--ACTION OF ANIMALS AND PLANTS UPON AIR When we wish to light a candle we apply a burning match to the wick--that is, we heat the wick. As ...