CHEMISTRY_1201_spring_09-EXAM_1-(1)

CHEMISTRY_1201_spring_09-EXAM_1-(1) - CHEMISTRY 1201-03...

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CHEMISTRY 1201-03 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 N A (Avogadro’s number) = 6.02 X 10 23 1. 1 picometer = __________ centimeters A) 1 × 10 10 B) 1 × 10 - 10 * C) 1 × 10 8 D) 1 × 10 - 8 E) 1 × 10 - 12 2. An object will sink in a liquid if the density of the object is greater than that of the liquid. The mass of a sphere is 9.83 g. If the volume of this sphere is less than __________ cm 3 , then the sphere will sink in liquid mercury (density = 13.6 g/cm 3 ) . A) 0.723* B) 1.38 C) 134 D) 7.48 E) none of the above 3. A combination of sand, salt, and water is an example of a __________. A) homogeneous mixture B) heterogeneous mixture* C) compound D) pure substance E) solid
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4. Which one of the following has the element name and symbol correctly matched? A) S, sodium
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This note was uploaded on 03/07/2012 for the course CHEM 1201 taught by Professor Cook during the Spring '08 term at LSU.

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CHEMISTRY_1201_spring_09-EXAM_1-(1) - CHEMISTRY 1201-03...

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