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CHEMISTRY_1201-01exam1.docx-(1)

CHEMISTRY_1201-01exam1.docx-(1) - CHEMISTRY 1201-01 EXAM 1...

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CHEMISTRY 1201-01 EXAM 1 Form 1 Time allowed = 1Hr INSTRUCTIONS Use of Calculators is allowed during the exam. Bubble your answers on the scantron sheet using a pencil. Bubble 1 under Grade or Education on the scantron sheet 1. The symbol for the element potassium is __________. A) Pt B) P C) K* D) S E) Ca 2. 1 nanometer = __________ picometers A) 1000* B) 0.1 C) 0.01 D) 1 E) 10 3. The number 0.00430 has __________ significant figures. A) 2 B) 3 * C) 5 D) 6 E) 4 4. A small amount of salt dissolved in water is an example of a __________. A) homogeneous mixture* B) heterogeneous mixture C) compound D) pure substance E) solid
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5. Which of the following are physical processes? 1. rusting of a nail 2. freezing of water 3. decomposition of water into hydrogen and oxygen gases 4. compression of oxygen gas A) 2, 3, 4 B) 1, 3, 4 C) 1, 3 D) 1, 2 E) 2, 4 * 6. The density of silver is 10.5 g/cm 3 . A piece of silver with a mass of 61.3 g would occupy a volume of __________ cm 3 . A) 0.171
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