Thursday, February 12, 2009

Uncle Tungsten: CH10-CH14Q

DUE TUESDAY

CH10: read the chapter, highlight any chemical terms and answer the following questions
1) Describe at least five contributions or discoveries of Robert Boyle.
2) What conclusion did Boyle discover about air?
3) What is phlogiston and its relationship to metals? What did Lavoisier demonstrate by oxidizing metals?
4) Explain the difference between oxygen, hydrogen and carbon dioxide gas. What experiment did Sachs perform and how did he capture these gases?

CH11: read the chapter, highlight any chemical terms and answer the following questions
1) Describe Davy's experiment with friction and nitric acid. How did Davy discover incandescence?
2) Describe Cavendish's experiments.
3) What procedure did Davy use to discover alkali and alkaline earth metals?
4) Compare the reactivity of metals
5) Describe the properties of batteries.
6) What are the properties of catalysts?
7) BONUS: What other talent did Davy had besides scientist and what made is lamp safe?

CH12: read the chapter, highlight any chemical terms and answer the following questions
1) Define emulsion. What chemicals are used to create an emulsion and develop a photograph.
2) Describe how early color photographs were produced.
3) What is the relationship between photographs and migraines?
4) Who is H.G. Wells and why was he one of Sachs' favorite authors?

CH13: read the chapter, highlight any chemical terms and answer the following
1) What are solutions, alloys and amalgams?
2) How was Sachs able to imagine the small-of a small particle? How do you imagine it?
3) How did Daltons revise the understanding of the atom?
3) Why was Avogadro's suggestion of diatomic molecules ignored?
4) Explain Cannizaro's conclusion of a person learning a new science.

CH14: read the chapter, highlight any chemical terms and answer the following
1) What are the necessary components of a battery?
2) How can fruits and vegetables be used as batteries?
3) Why is removing air from a light bulb necessary?
4) Explain "light is an electromagnetic disturbance propagated through a field according to electromagnetic laws.

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