Science

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Across
  1. 2. Serving as a foundation or basis for something.(10)
  2. 4. The number of electrons that an atom can lose, gain, or share when it forms a chemical bond.(7)
  3. 7. The system of springs, shock absorbers, and linkages that connect a vehicle's wheels to its body.(10)
  4. 9. A mixture of two or more metals, such as brass or steel. (6)
  5. 10. A property of matter that causes it to attract or repel other matter.(6)
  6. 12. A combination of symbols that represents the elements in a compound and their relative proportions.(7)
  7. 13. The amount of moisture in the air.(8)
  8. 15. The force that opposes motion between two surfaces that are in contact.(8)
  9. 16. One of two or more atoms that have the same number of protons but different numbers of neutrons.(7)
  10. 19. To turn a liquid into a gas by heating or exposing it to a vacuum.(9)
  11. 20. The smallest unit of a chemical compound that retains its chemical properties.(8)
Down
  1. 1. Consisting of uniform composition or structure throughout.(11)
  2. 3. A high-temperature gas made up of ions and free electrons.(6)
  3. 5. To turn a gas into a liquid by cooling or compressing it.(7)
  4. 6. The tendency of an object to resist changes in its motion(8)
  5. 8. The liquid or gas that has passed through a filter.(9)
  6. 11. The relationship between two or more quantities, such as the amount of one substance relative to another in a chemical reaction.(10)
  7. 14. A molecule made up of three oxygen atoms.(5)
  8. 17. The force per unit area exerted by a gas or liquid. (8)
  9. 18. Tiny bits of matter, such as atoms or ions.(9)