1. Name the scientist who discovered the Law of Gravitation.   Euclid   Galileo   Kepler   Newton   Hint Half-n-half Clue   2. Of the three states of matter, which one has definite volume but no definite shape?   Solid   Liquid   Water   Gas   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?   Liquid   Gas   Air   Solid   Half-n-half Clue   5. A chemical change takes place when ice melts to water.   True   False   6. _______ is the heaviest natural element.   Mercury   Uranium   Radium   Lead   Half-n-half Clue   7. Liquids can be poured but solids cannot. Which statement explains this?   Molecules in solids are not in a state of vibration.   Liquids take the shape of the container in which they are poured.   Liquids flow because of gravity.   The force of attraction between molecules is less in liquids than in solids.   Half-n-half Clue