1. Of the three states of matter, which one has definite volume but no definite shape?   Solid   Water   Liquid   Gas   Hint Half-n-half Clue   2. All planets move in elliptical orbits with the sun at the focus. Who formulated this law?   Newton   Euclid   Galileo   Kepler   Half-n-half Clue   3. A substance which consists of atoms that are alike is called   an alloy   a mixture   a compound   an element   Half-n-half Clue   4. 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 Universal Law of Gravitation   Newton's Third Law of Motion   Newton's First Law of Motion   Newton's Second Law of Motion   Half-n-half Clue   5. _______ is the heaviest natural element.   Lead   Uranium   Radium   Mercury   Half-n-half Clue   6. How many natural elements are there?   88   92   103   113   Half-n-half Clue   7. _______ typically combine together to form molecules.   Atoms   Electrons   Protons   Elements   Half-n-half Clue