Chemistry - Ch 5 Prep-Test

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1 Chemistry - Ch 5 Prep-Test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. A volume of 1 cubic centimeter is equivalent to a. 1 milliliter. c. 1 liter. b. 1 gram. d cubic decimeters. 2. Which of the following observations is quantitative? a. The liquid turns blue litmus paper red. c. The liquid tastes bitter. b. The liquid boils at 100ºC. d. The liquid is cloudy. 3. Quantitative observations are recorded using a. numerical information. c. non-numerical information. b. a control. d. a system. 4. Qualitative observations are recorded using a. numerical information. c. non-numerical information. b. a control. d. a system. 5. The symbol mm represents a. micrometer. c. milliliter. b. millimeter. d. meter. 6. The quantity of matter per unit volume is a. mass. c. inertia. b. weight. d. density. 7. The liter is equivilent to a m 3. c g 3. b cm 3. d c The metric unit for mass is the a. slug. c. meter. b. cubic centimeter. d. kilogram. 9. The symbol that represents the measured unit for volume is a. ml. c. mm. b. mg. d. cm. 10. All of the following are SI units for density EXCEPT a. kg/m 3. c. g/cm 3. b. g/ml. d. g/m Which statement about density is true? a. Two samples of a pure substance may have different densities. b. Density is a chemical property. c. Density is a physical property. d. The density of a sample depends on its location on Earth. 12. The density of pure diamond is 3.5 g/cm 3. The mass of a diamond is 0.25 g. Find its volume. a cm 3 c. 3.5 cm 3 b cm 3 d. 14 cm What is the density of g of matter whose volume is 6.80 cm 3? a g/cm 3 c g/cm 3 b g/cm 3 d g/cm 3 1

2 milliliters is equivalent to a. 1 hectoliter. c. 1 centiliter. b. 1 microliter. d. 1 deciliter. 15. To two significant figures, the measurement g should be reported as a g. c g. b g. d g. 16. The number of significant figures in the measurement kg is a. 3. c. 5. b. 4. d The measurement that has been expressed to three significant figures is a g. c g. b g. d g. 18. The measurement that has only nonsignificant zeros is a ml. c ml. b ml. d. 506 ml. 19. The number that has five significant figures is a c b d The product of 13 cm and 5.7 cm is correctly reported as a. 74 cm 2. c cm 2. b cm 2. d. 75 cm Round to four significant figures. a c x 10 8 b x 10 8 d x How many significant digits should be shown in the product of 1.6 cm and 2.4 cm? a. 1 c. 3 b. 2 d The speed of light is 300,000 km/s. In scientific notation, this speed is a km/s. c km/s. b km/s. d km/s. 24. The average distance between the Earth and the moon is 386,000 km. Expressed in scientific notation, this distance is a km. c km. b km. d km. 25. An analytical balance can measure mass to the nearest 1/10,000 of a gram, g. In scientific notation, the accuracy of the balance would be expressed as a. 1.0 x 10 3 g. c. 1 x 10 4 g. b. 1 x 10 3 g. d. 1 x 10 4 g. 26. The result of dividing 10 7 by 10 3 is a c b d The expression of 5008 km in scientific notation is. a km c km b km d km 2

3 28. How many significant figures are in the measurement kg? a. two c. five b. four d. This cannot be determined. 29. How many significant figures are in the measurement 40,500 mg? a. two c. four b. three d. five 30. How many significant figures are in the measurement grams? a. two c. four b. three d. five 31. Express the sum of 1111 km and 222 km using the correct number of significant digits. a km c km b km d km 32. What is the measurement 1042 L rounded off to two significant digits? a L c L b L d L 33. What is the temperature of absolute zero measured in C? a. 373 C c. 173 C b. 273 C d. 73 C 34. Which temperature scale has no negative temperatures? a. Celsius c. Joule b. Fahrenheit d. Kelvin 35. What is the temperature 34 C equal to in the Kelvin scale? a. 139 K c. 239 K b. 207 K d. 339 K 36. If the temperature changes by 100 K, by how much does it change in C? a. 0 C c. 100 C b. 37 C d. 273 C 37. What is the quantity meters expressed in centimeters? a cm c. 7.5 cm b cm d cm 38. What is the quantity 987 milligrams expressed in grams? a g c g b g d. 98,700 g 39. A pint of blood would be how many ml? (1 L= qt and 1 qt = 2 pints.) a. 529 ml c. 473 ml b. 946 ml d. 454 ml 40. What is the volume of a salt crystal measuring m by m by m? a. 2.6 x 10-5 c. 26 x 10-4 b. 2.6 x 10 5 d. 5.4 x What is the result of adding and ? a c b d The density of gold is 19.3 g/cm 3. The volume of a solid piece of gold is 2.50 cm 3. Find its mass. a. 8 g c g b. 48 g d. 7.72g 3

4 43. Which of the above balances would produce a measurement with the most significant digits? a. Econo-Balance c. Balance Pro b. Good Balance d. Exacto-Balance Use the following passage and the drawing to answer the next two questions. In a lab experiment, an unknown object s mass and volume were measured. The drawing shows the measurement of the object s volume. A student went on to measure the mass of the object. The mass was determined to be 14.7 g. 44. The volume should be measured as : a. 32 ml c ml b ml d. 30 ml 45. The density of the object is : a g/ml c. 2.2 g/ml b ml/g d g/ml 4

5 Matching Match each item with the correct statement below. a. freezing point d. density b. Kelvin temperature scale e. mass c. Celsius temperature scale f. significant figure 46. known or estimated in a measurement 47. the quantity of matter an object contains 48. the metric scale for temperature that has no negative numbers 49. absolute zero is measured as ratio of mass to volume 5