Chemistry Practice Exam 1

Chemistry Practice Exam 1 - Name Class Date ID A Chem 1...

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Name: ________________________ Class: ___________________ Date: __________ ID: A 1 Chem 1 Exam 1 Fa06 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. A cube of iron has a mass of 15.37 g. If each side of the cube has dimensions of 1.25 cm, what is the density of iron? a. 1.23 g/cm 3 b. 1.92 g/cm 3 c. 3.00 g/cm 3 d. 7.87 g/cm 3 e. 10.5 g/cm 3 ____ 2. Chemical reactions are often studied at 25°C. What is this temperature in Fahrenheit? a. 45°F b. 57°F c. 68°F d. 77°F e. 103°F ____ 3. An intensive property of a substance is a. independent of amount. b. only visible with magnification. c. dependent upon amount. d. dependent upon temperature. e. dependent only on mass and volume. ____ 4. Which of the following is not an SI base unit? a. kilogram b. liter c. Fahrenheit d. meter e. second ____ 5. Silver iodide (AgCl) is relatively insoluble in water. At 25 _C, only 214 m g (micrograms) will dissolve in 1.0 liter of water. How many liters of water are needed to dissolve 5.0 g of silver iodide? a. 4.3 × 10 0 L b. 2.1 × 10 2 L c. 4.3 × 10 2 L d. 1.1 × 10 3 L e. 2.3 × 10 4 L
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Name: ________________________ ID: A 2 ____ 6. Two electronic balances are tested using a standard weight. The true mass of the standard is 1.0000 g. The results of 5 individual measurements on each balance are recorded below. Balance A Balance B 0.8888 g 1.3110 g 0.9959 g 1.3109 g 1.1182 g 1.3111 g 1.0033 g 1.3110 g 0.9938 g 1.3110 g average mass = 1.0000 g 1.3110 g Which statement best describes the results? a.
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This note was uploaded on 06/14/2008 for the course UG 07110_02 taught by Professor Nafar during the Summer '08 term at Logan University.

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Chemistry Practice Exam 1 - Name Class Date ID A Chem 1...

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