Chemistry Review

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Across
  1. 3. Small number after element in a formula
  2. 5. Change that doesn't rearrange atoms, like cutting
  3. 8. Particle that determines the element
  4. 9. Anything that has mass and takes up space
  5. 13. Shared by atoms in molecules to become stable
  6. 14. Reaction releasing heat (gets hot)
  7. 16. Causes matter to change states
  8. 18. A pure substance, type of atom
  9. 19. Center of the atom containing neutrons protons
Down
  1. 1. Number in front of formula telling you how many molecules
  2. 2. A chemical _________ rearranges atoms to form new substances
  3. 4. Change that does rearrange atoms, like baking a cake
  4. 6. smallest uncuttable piece of matter
  5. 7. Formed from a chemical reaction
  6. 10. Reaction absorbing heat (gets cold)
  7. 11. Changes into a product in chemical reaction
  8. 12. Atoms bonded together such as H2O
  9. 15. Atoms can become ______ when their electron shell is full
  10. 17. Conservation of matter states that ______ doesn't change in reaction