1. Of the three states of matter, which one has definite volume but no definite shape?   Gas   Liquid   Water   Solid   Hint Half-n-half Clue   2. All planets move in elliptical orbits with the sun at the focus. Who formulated this law?   Kepler   Galileo   Euclid   Newton   Half-n-half Clue   3. Liquids can be poured but solids cannot. Which statement explains this?   Liquids take the shape of the container in which they are poured.   The force of attraction between molecules is less in liquids than in solids.   Liquids flow because of gravity.   Molecules in solids are not in a state of vibration.   Half-n-half Clue   4. _______ typically combine together to form molecules.   Electrons   Atoms   Elements   Protons   Half-n-half Clue   5. Name the scientist who discovered the Law of Gravitation.   Galileo   Kepler   Newton   Euclid   Half-n-half Clue   6. Which of the following is an element?   Water   Aluminum   Salt   Air   Half-n-half Clue   7. Weight is the same as mass.   True   False