Chemistry Crossword

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  1. 2. A substance composed of two or more atoms of different elements.
  2. 5. The only form of iron corrosion..
  3. 6. This is what the the three things needed for fire are collectively known as.
  4. 12. This gas is the most abundant gas in the Earth's atmosphere.
  5. 14. The process in a reaction where energy in the form of heat is released.
  6. 15. A particle with a net charge.
Down
  1. 1. Dioxide This is the most common greenhouse gas.
  2. 3. The scientific term for 'burning'.
  3. 4. A substance composed of two or more elements that are chemically combined together
  4. 7. The process in a reaction where energy in the form of heat is absorbed.
  5. 8. This is the process of which people use to stop iron corrosion, by strengthening the material.
  6. 9. A substance that is combined of two or more elements chemically combined together.
  7. 10. This is the smallest type of particle.
  8. 11. This type of matter is listed on the periodic table.
  9. 13. This gas takes up roughly 21% of Earth's atmosphere.