Chem 101 Exam I

Chem 101 Exam I - Chemistry 101 Section 002 Exam I Name_...

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Chemistry 101 Section 002 Exam I Name_______________________ PID______________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) What is the physical state in which matter has no specific shape but does have a specific volume? A) gas B) ice C) liquid D) salts E) solid 2) Which one of the following is a pure substance? A) salt water B) elemental copper C) milk D) concrete E) wood 3) Which one of the following is not an intensive property? A) boiling point B) density C) melting point D) mass E) temperature 4) In the following list, only __________ is not an example of a chemical reaction. A) the condensation of water vapor B) dissolution of a penny in nitric acid C) a burning candle D) the formation of polyethylene from ethylene E) the rusting of iron 5) Of the objects below, __________ is the most dense. A) an object with a volume of 13 dm 3 and a mass of 1.29 x 10 3 g B) an object with a volume of 139 mL and a mass of 93 g C) an object with a volume of 0.00212 m 3 and a mass of 4.22 x 10 4 mg D) an object with a volume of 3.91 x 10 -24 nm3 and a mass of 7.93 x 10 -1 ng E) an object with a volume of 2.5 L and a mass of 12.5 kg 6) Express the temperature, 422.35 K, in degrees Celsius. A) 22.78 ° C B) 792.23 ° C C) 50.89 ° C D) 695.50 ° C E) 149.20 ° C
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Chemistry 101 Section 002 Exam I Name_______________________ PID______________________ 7) A cube of an unknown metal measures 1.61 mm on one side. The mass of the cube is 36 mg. Which of the following is most likely the unknown metal? Metal Density (g/cm 3 ) Rhodium 12.4 Copper 8.96 Niobium 8.57 Vanadium 6.11 Zirconium 6.51 A) niobium B) rhodium C) copper D) zirconium E) vanadium 8) A wooden object has a mass of 10.782 g and occupies a volume of 13.72 mL. What is the density of the object determined to an appropriate number of significant figures? A) 8 x 10
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This note was uploaded on 04/27/2008 for the course CHEM 101 taught by Professor Farahh during the Spring '02 term at UNC.

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Chem 101 Exam I - Chemistry 101 Section 002 Exam I Name_...

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