Raymond Chang 10th edition Chapter 1 Chemistry Raymond Chang 10th edition Chapter 1 Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Question 1 A compound can be separated into its constituent elements by physical means. A) True B) False

Question 2 A mixture can be separated into its constituent chemical substances by physical means. A) True B) False

Question 3 What would be the length in centimeters of one side of a cube that has a volume of one liter? A) 1 cm B) 10 cm C) 100 cm D) 100 cm

Question 4 An object changes by 10 degrees Celsius. Express this temperature change in Kelvin units. A) 283 K B) 10 K C) -263 K D) Cannot be determined without knowing the initial and final temperature

Question 5 The scientific method is a systematic process in which the experimental results (data) are altered to support the researcher's hypothesis. A) True B) False

Question 6 Which of the following is the appropriate conversion factor to use to convert a measurement from units of grams to units of kilograms? A) 1 g/1000 kg B) 1000 kg/1 g C) 1000 g/1 kg D) 1 kg/1000 g

Question 7 Which of the following conversion factors could be used to convert units of g/mL to units of g/L? A) 1 mL/1000 L B) 1000 mL/1 L C) 1000 L/ 1 mL D) 1 L/ 1000 mL

Question 8 If 20.0 g of sugar are added to 1250 mg of sugar, what is the total mass of sugar expressed in grams with the appropriate number of significant digits? A) 21.250 g B) 21.25 g C) 21.3 g D) 21 g

Question 9 Which of the following could be used to convert 10 cm2 to mm2? A) 10 cm2 X 1 mm2/10 cm2 B) 10 cm2 X 1 cm2/10 mm2 C) 10 cm2 X 10 mm2/1 cm2 D) 10 cm2 X 102 mm2/1 cm2

Question 10 What is the area in mm3 of a cube that has sides with a length of 1.0 cm? A) 10.0 mm3 B) 100. mm3 C) 0.0100 mm3 D) 1.00 x 103 mm3

Question 11 The formation of the Universe is traced back to the Big Bang. This is an example of a A) hypothesis B) observation C) theory D) law E) all of the above

Question 12 Invisible substances such as air are not examples of matter. A) True B) False

Question 13 Which of the following best describes a sample of milk? A) Pure substance B) Homogeneous mixture C) Heterogeneous mixture D) All of the above E) None of the above

Question 14 Which of the following cannot be used as a method of separation for the components of a mixture? A) Distillation B) Sublimation C) Filtration D) Condensation E) Extraction

Question 15 The liquid state of matter A) has a defined shape and a defined volume. B) has a defined shape but no defined C) has a defined volume but no defined shape. D) has no defined shape and no defined

Question 16 Which of the following is not an SI unit of measurement? A) gram B) meter C) second D) Joule E) Kelvin

Question 17 The quantity 100 pm is the same as A) 10-12 m. B) 10-1 nm. C) 1.0 x 10-2 nm. D) 1.0 x 102 nm. E) none of the above.

Question 18 How many significant figures are in the quantity 490 book pages? A) 0 B) 1 C) 2 D) 3 E) none of the above

Question 19 Which of the following expressions is false? A) 1 L = 1 dm3 B) 100 cm3 = 10-1 dm3 C) 1 dm3 = 1 mL D) 1 m3 = 1000 mm3 E) 10-6 mm3 = 10-3 mm3

Question 20 What is the relationship between the magnitude of a degree Celsius and a degree Fahrenheit? A) 1°C = 1°F B) 1°C = (5/9)°F C) 1°C = (9/5)°F D) 1°C = (5/9)°F - 32 E) 1°C = (5/9)°F + 32

Answer Key – Chapter 1 B A D C C B D A E