Chemistry Review

123456789101112
Across
  1. 6. Installed on smokestacks to prevent harmful products from entering the environment
  2. 8. A metal (usually iron) rusts or is oxidized
  3. 10. 2 words Examples are coal, oil, natural gas and gasoline
  4. 11. Type of reaction where an acid and a base combine
  5. 12. Substance containing hydrogen in solution with a pH less than 7
Down
  1. 1. Chemical in the air that causes harm to living things or the environment
  2. 2. Process of applying a zinc coating to protect iron or steel
  3. 3. Substance usually containing hydroxide with a pH greater than 7
  4. 4. Compounds produced in a chemical reaction
  5. 5. 2 words Gas that traps heat in Earth's atmosphere preventing heat from escaping into space
  6. 7. Type of reaction where carbon dioxide and water are produced
  7. 9. 2 words One of the key greenhouse gases that scientists are most concerned with