CHM 113 EXAM 1 QUESTIONS AND ANSWERS LATEST UPDATE

CHM 113 EXAM 1 QUESTIONS AND ANSWERS LATEST UPDATE Matter that: - is uniform throughout - does not have a variable composition - contains more than one kind of atom - Answers Compound Matter that: - is uniform throughout - does not have a variable composition - does not contain more than one kind of atom - Answers Element Matter that: - is uniform throughout - does not have a variable composition - Answers Pure Substance Matter that: - is uniform throughout - has a variable composition - Answers Homogenous Mixture (Solution) Homogenous Mixtures are also called _________. - Answers Solutions Matter that is uniform throughout. - Answers Homogenous Matter that is not uniform throughout. - Answers Heterogenous Mixture Which of the following is NOT a pure substance? a. CO2 b. milk c. helium (He on the periodic table) d. none of the above - Answers B Which of the following is a homogeneous mixture? a. CO2 b. milk c. helium (He on the periodic table) d. none of the above - Answers B Which of the following is a compound? a. CO2 b. milk c. helium (He on the periodic table) d. none of the above - Answers A 1 g = _____mg - Answers 1000 If a graduated cylinder with mL markings contains water JUST above the 752 mL mark, how would the volume most correctly be recorded? a. 750 mL b. 752 mL c. 752.1 mL d. 752.10 mL - Answers C During a ______ change, a substance changes its physical appearance but not its composition. - Answers Physical During a _______ change (also called a chemical reaction), a substance is transformed into a chemically different substance. - Answers Chemical water boiling: a. Physical Change b. Chemical Change - Answers A iron rusting: a. Physical Change b. Chemical Change - Answers B methane burning: a. Physical Change b. Chemical Change - Answers B