Test Bank For Chemistry Sixth Edition Thomas R. Gilbert Rein V. Kirss Stacey Lowery Bretz Natalie Foster Chapter 1-22
Chapter 1: Particles of Matter: Measurement and the Tools of Science MULTIPLE CHOICE 1. Which one of the following is a mixture?
a. an aqueous solution of sugar b. pure water c. nitrogen gas
d. copper metal e. table salt (sodium chloride)
ANS: A DIF: Easy REF: 1.1 OBJ: Describe different forms of matter: distinguish between pure substances, solutions, heterogeneous mixtures, elements, and compounds. MSC: Understanding 2. A pure substance __________
a. b. c. d. e.
can not be separated into simpler substances by physical means. can have a composition that varies from sample to sample. must be an element. has different chemical and physical properties depending on its source. must be a compound.
ANS: A DIF: Easy REF: 1.1 OBJ: Describe different forms of matter: distinguish between pure substances, solutions, heterogeneous mixtures, elements, and compounds. MSC: Understanding 3. An element __________
a. b. c. d. e.
can be separated into its components by physical methods. may have different chemical properties depending on its source. can not be separated into simpler substances by chemical methods. can also be a compound. exists only as atoms and not as molecules.
ANS: C DIF: Easy REF: 1.1 OBJ: Describe different forms of matter: distinguish between pure substances, solutions, heterogeneous mixtures, elements, and compounds. MSC: Understanding 4. Which of the following is not a pure substance?
a. air b. nitrogen gas c. oxygen gas
d. argon gas e. table salt (sodium chloride)
ANS: A DIF: Easy REF: 1.1 OBJ: Describe different forms of matter: distinguish between pure substances, solutions, heterogeneous mixtures, elements, and compounds. MSC: Understanding 5. Which of the following is a pure substance?