Term One

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Across
  1. 1. A metal that bonds with carbon and oxygen. Also known as marble
  2. 5. Evidence of a gas produced during a chemical reaction
  3. 6. Evidence of plant and animal matter preserved in rocks
  4. 8. The center of the Earth
  5. 9. Colour of light given off when magnesium reacts with oxygen
  6. 10. A process where rocks are broken down by physical or chemical means
  7. 13. The number of protons in an atom
  8. 14. An atom that has lost or gained electrons
  9. 17. Negative subatomic particles that orbit the nucleus of atoms
  10. 19. The symbol for lithium
  11. 20. One example of a state of matter
  12. 22. The type of table used to show all the elements that exist
  13. 23. A feature that might appear near plate boundaries
  14. 24. Another word for a chemical that is added in a reaction
Down
  1. 2. Protons and neutrons combined
  2. 3. The name given to the plates that make up the crust
  3. 4. The variable that is measured when carrying out an experiment
  4. 7. A type of plate interaction where one plate moves under another
  5. 8. Types of circular currents that occur when hot molten rises, cools, falls causing the crust to move
  6. 11. Part of an experiment where you analyse what worked and what could be improved on
  7. 12. Used when writing chemical equations
  8. 15. A neutral subatomic particle found inside the nucleus of atoms
  9. 16. A type of compound that forms when a positive ion and a negative ion combine in a reaction
  10. 18. Frozen carbon dioxide
  11. 21. A positive subatomic particle found inside the nucleus of atoms