Chemistry: States of Matter Crossword Clues Across 1. Molecules in a solid are __________ meaning they don’t change position relative to one another. 2. The transition from a gas to a liquid. 3. The transition from a solid to a liquid. 4. Atoms are made up of clouds of electrons which are centered around a ____________, which is made of protons and neutrons. 5. The lowest temperature that it is possible to reach (0 °K, -273.15 °C, -459.67 °C) is called _______________ zero. 6. The amount of space that something takes up. 7. At extremely high temperatures, such as those found in the sun, the electrons are ripped off of atoms to create another state of matter called _____________. Down 8. The transition from a liquid to a solid. 9. Molecules in a __________ are not fixed, and do not have any appreciable attraction to one another. 10. The transition from a liquid to a gas. 11. _________________ is the description of how much mass a substance has per unit of volume. 12. Molecules in a __________ are not fixed, but are still attracted to one another. 13. Liquids, and gasses take the _________ of their container. 14. The transition from a solid to a gas. 15. All matter in the universe is made of ___________.