1) Oxygen, O2, is an example of a(n) A) chemical B) type of energy C) wave. D) electric charge E) element 2) The metric base unit for length is the A) meter. B) inch. C) millimeter. D) kilometer. E) foot. 3) The SI unit for volume is the A) cubic meter. B) quart. C) liter. D) pint. E) centimeter 4) In order to enhance your learning in chemistry, you should NOT A) study a little every day. B) form a study group. C) go to professor's office hours. D) be an active learner. E) wait until the night before the exam to study. 5) In this list, which substance can be classified as a chemical? A) temperature B) sleep C) cold D) heat E) sugar 6) Which of the following is the basic unit of mass in the SI? A) pound B) kilogram C) milligram D) microgram E) gram