1. Liquids can be poured but solids cannot. Which statement explains this?   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.   Liquids take the shape of the container in which they are poured.   Hint Half-n-half Clue   2. Mass is the amount of matter in a substance.   True   False   3. Which of the following is an element?   Air   Aluminum   Water   Salt   Half-n-half Clue   4. _______ typically combine together to form molecules.   Atoms   Protons   Elements   Electrons   Half-n-half Clue   5. Of the three states of matter, which one has neither definite volume nor definite shape?   Gas   Air   Solid   Liquid   Half-n-half Clue   6. All planets move in elliptical orbits with the sun at the focus. Who formulated this law?   Euclid   Galileo   Kepler   Newton   Half-n-half Clue   7. The force of attraction between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. Which is this law?   Newton's Second Law of Motion   Newton's First Law of Motion   Newton's Third Law of Motion   Newton's Universal Law of Gravitation   Half-n-half Clue