OCN QUIZ TWO

OCN QUIZ TWO - R&P_Ch_7_Seawater_Chemistry 1 Marks: 1...

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1 Marks: 1 Antoine-Laurent Lavoisier showed that water is not an irreducible "element". To prove it he produced two elemental gases which he then mixed to produce molecules of water. One element,__________, was produced from dripping acid onto metal, the other element, __________, was produced by heating a mineral of mercury. (choose them in the correct order) Answer: a. oxygen and hydrogen b. helium and oxygen c. hydrogen and oxygen d. oxygen and helium 2 Marks: 1 The __________, usually a liquid, is always the more abundant constituent; the ___________, often a dissolved salt or gas, is the less abundant. Answer: a. solute, solvent b. solvent, solute c. mixture, ion d. ion, mixture 3 Marks: 1 The water molecule is dipolar. When water comes into contact with compounds whose elements are held together by non-polar bonding, the polar water molecule will separate that compound’s component elements into solution. Answer: a. True b. False 4 Marks: 1 A solution is made of two components, a solvent and a solute. Answer: a. True b. False 5 Marks: 1 Human tissue averages over 70% by weight of the solvent water. What prevents our own tissues from dissolving in this strong solvent? Answer: a. non-polar oils b. isotonicity c. constant regeneration d. repulsion
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6 Marks: 1 We call the ocean salty because it contains dissolved components of salts such as: NaCl, KCl, CaSO4, and CaCO3. When these salts dissolve they dissociate into components that are technically no longer salts, but are called ______________. Answer: a. atoms b. elements c. ions d. compounds e. molecules 7 Marks: 1 Which one of the following types of molecular bonding is characterized by electrostatic attraction that exists between ions having opposite charges? Answer: a. Hydrogen bonds b. Electric bounds c. Nuclear bonds d. Ionic bonds 8 Marks: 1 Water vapor condenses into liquid water by the process of ___________. Answer:
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This note was uploaded on 04/20/2008 for the course OCN 100 taught by Professor Horrigan during the Fall '08 term at S.F. State.

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OCN QUIZ TWO - R&P_Ch_7_Seawater_Chemistry 1 Marks: 1...

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