Science 24 - Chemistry

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Across
  1. 4. A material made by combining two or more metallic elements to give greater strength or resistance to corrosion.
  2. 5. A chemical reaction in which an acid and a base interact to cancel each other out, forming water and a salt.
  3. 7. Substances introduced into the environment that have harmful or poisonous effects.
  4. 9. The starting substances that undergo change during a chemical reaction.
  5. 11. A specific type of pesticide designed to target and kill unwanted plants or weeds.
  6. 14. The effect where certain gases trap heat in the Earth's atmosphere.
  7. 17. Materials made of long, repeating chains of molecules.
Down
  1. 1. A reaction or process that absorbs heat from its surroundings, causing a drop in temperature.
  2. 2. The process of applying a protective zinc coating to steel or iron to prevent rusting.
  3. 3. The gradual destruction of materials, usually metals, by a chemical reaction with their environment.
  4. 6. A solid that emerges from a liquid solution during a chemical reaction.
  5. 7. A general term for a chemical substance used to destroy organisms harmful to cultivated plants or animals.
  6. 8. A reaction or process that releases heat into its surroundings.
  7. 10. The substances that are formed as a result of a chemical reaction.
  8. 12. A specific type of pesticide formulated to kill insects.
  9. 13. A chemical reaction that involves the rapid combination of a fuel with oxygen, producing heat and light.
  10. 15. A substance made by chemical synthesis, especially to imitate a natural product.
  11. 16. Canada's national workplace hazard communication standard.