CHEMISTRY EXAM REVIEW - TRUE OR FALSE CFCs

EXAM REVIEW - TRUE OR FALSE CFCs are made up of carbon, fluorine, and cesium. ANSWER = False Some CFCs are synthetic chemicals. ANSWER = False CFCs were developed as replacements for toxic refrigerants ANSWER = True CFC is another name for fluorochlorocarbon ANSWER = False The weight of an object can vary with the object's location ANSWER = True A weight measurement includes the effect of Earth's gravitational pull on the object being measured ANSWER = True Scientists measure the amount of matter in terms of mass ANSWER = True Subtle differences in weight exist at different locations on Earth ANSWER = True Your mass on the Moon would be equal to your mass on Earth ANSWER = True CFCs do pose a threat to the environment even though they are stable ANSWER = True CFCs usually react readily with other chemicals ANSWER = False The ozone layer is mostly located in the troposhere ANSWER = False Earth attracts all objects to its surface due to gravity ANSWER = True All matter that we encounter in everyday life exists in one of four physical forms ANSWER = False The particles in gas are spaced far apart ANSWER = True A solid has an indefinite shape and volume ANSWER = False A liquid has a definite shape and takes on the volume of its container. ANSWER = False A gas has both the shape and the volume of its container ANSWER = True The particles in a gas cannot be compressed into a smaller volume ANSWER = False Liquids tend to expand when heated ANSWER = True The words gas and vapor can be used interchangeably. ANSWER = False Ancent philosophers regularlyperformed controlled experiments. ANSWER = False