Term 4 units: Space and Chemical Reactions

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Across
  1. 1. the inner planets are all terrestrial and are made of
  2. 5. The curved path of a celestial object around a star, planet, or moon
  3. 8. To decay or break down a substance
  4. 10. A substance produced in a chemical reaction
  5. 11. To keep the same or to preserve
  6. 12. A substance that takes part in a chemical reaction
  7. 14. the outer planets are all bigger in size and are made of
Down
  1. 2. The process of burning something (reacting it with oxygen)
  2. 3. An object that orbits a planet, star or moon. It can be man-made or natural
  3. 4. How the sun's rays when they hit the earth during summer months
  4. 6. objects made up of rock, ice and dust that orbit the sun
  5. 7. all existing matter and space considered as a whole
  6. 9. A substance such as coal or gas that is burned to produce energy
  7. 13. an imaginary line about which a body rotates.