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Unformatted text preview: Practice Exam Chemistry 101 Section 002 Multiple Choice: 1) Solids have a __________ shape and are not appreciably __________. A) definite, compressible B) definite, incompressible C) indefinite, compressible D) indefinite, incompressible E) sharp, convertible 2) If matter is uniform throughout, cannot be separated into other substances by physical processes, but can be decomposed into other substances by chemical processes, it is called a (an) __________. A) heterogeneous mixture B) element C) homogeneous mixture D) compound E) mixture of elements 3) A separation process that depends on differing abilities of substances to form gases is called __________. A) filtration B) solvation C) distillation D) chromatography E) all of the above are correct 4) The SI unit of temperature is __________. A) K B) C C) F D) t E) T 5) A temperature of 400 K is the same as __________F. A) 261 B) 286 C) 88 D) 103 E) 127 6) The density of silver is 10.5 3 g/cm . A piece of silver with a mass of 61.3 g would occupy a volume of __________ 3 cm . A) 0.171 B) 644 C) 10.5 D) 0.00155 E) 5.84 7) The number 1.00430 has __________ significant figures. A) 2 B) 3 C) 5 D) 6 E) 4 8) The length of the side of a cube (in cm) having a volume of 44.4 L is __________. A) 875 B) 35.4 C) 6.66 D) 66.6 E) 0.354 9) Methane and ethane are both made up of carbon and hydrogen. In methane, there are 12.0 g of carbon for every 4.00 g of hydrogen, a ratio of 3:1 by mass. In ethane, there are 24.0 g of carbon for every 6.00 g of hydrogen, a ratio of 4:1 by mass. This is a statement 24....
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This note was uploaded on 03/20/2008 for the course CHEM 101 taught by Professor Farahh during the Spring '02 term at UNC.
- Spring '02