1. Mass is the amount of matter in a substance.   True   False   2. _______ typically combine together to form molecules.   Electrons   Protons   Elements   Atoms   Hint Half-n-half Clue   3. The weight of an object is best determined by a beam balance rather than a spring balance.   True   False   4. Of the three states of matter, which one has neither definite volume nor definite shape?   Air   Liquid   Solid   Gas   Half-n-half Clue   5. Of the three states of matter, which one has definite volume but no definite shape?   Gas   Solid   Liquid   Water   Half-n-half Clue   6. Which of the following occurs during evaporation?   Steam and oxygen escape from the liquid surface.   Steam and oxygen escape from the liquid bulk.   Molecules escape from the liquid surface.   Molecules escape from the liquid bulk.   Half-n-half Clue   7. The weight of an object from the Earth increases when taken to Moon.   True   False