Chem 1123 Test 1 Key

Chem 1123 Test 1 Key - Test 1 Key 1 Identify a liquid A definite volume and definite shape B definite volume and no definite shape C no definite

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Test 1 Key 1) Identify a liquid. A) definite volume and definite shape B) definite volume and no definite shape C) no definite shape and definite volume D) no definite shape and no definite volume Answer: B or C (Everyone was given credit due to the confussion) Diff: 1 Page Ref: 1.3 2) Which of the following statements about crystalline and amorphous solids is TRUE? A) A crystalline solid is composed of atoms or molecules arranged with long-range repeating order. B) An example of a crystalline solid is glass. C) An example of an amorphous solid is table salt (NaCl). D) An amorphous solid is composed of atoms or molecules with a majority of its volume empty. E) All of the above statements are TRUE. Answer: A Diff: 1 Page Ref: 1.3 3) Which of the following statements about the phases of matter is TRUE? A) In both solids and liquids, the atoms or molecules pack closely to one another. B) Solids are highly compressible. C) Gaseous substances have long-range repeating order. D) There is only one type of geometric arrangement that the atoms or molecules in any solid can adopt. E) Liquids have a large portion of empty volume between molecules. Answer: A Diff: 1 Page Ref: 1.3 4) A substance that can't be chemically broken down into simpler substances is A) a homogeneous mixture. B) an element. C) a heterogeneous mixture. D) a compound. E) an electron. Answer: B Diff: 1 Page Ref: 1.3 5) A substance composed of two or more elements in a fixed, definite proportion is A) a homogeneous mixture. B) a heterogeneous mixture. C) a compound. D) a solution. E) an alloy. Answer: C Diff: 1 Page Ref: 1.3 6) Two or more substances in variable proportions, where the composition is constant throughout are
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A) a compound. B) an element. C) a heterogeneous mixture. D) a homogeneous mixture. E) a crystalline solid. Answer: D Diff: 1 Page Ref: 1.3 7) Which of the following statements about energy is FALSE? A) Energy can be converted from one type to another. B) The total energy of a system remains constant.
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This note was uploaded on 02/12/2011 for the course CHEM 112 taught by Professor Sttaf during the Spring '03 term at Arkansas Pine Bluff.

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Chem 1123 Test 1 Key - Test 1 Key 1 Identify a liquid A definite volume and definite shape B definite volume and no definite shape C no definite

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