Unit 9: Material Changes

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Across
  1. 2. A substance that is made in a reaction
  2. 4. To cover an iron object with a metal to prevent rusting
  3. 6. A measure of how acidic or basic something is
  4. 10. A red/brown layer caused byoxygen and water reacting with iron
  5. 12. acid + base --> salt + water
  6. 14. A compound with pH0-7 and forms H+ ions in solution
  7. 15. The process of changing substances into different substances
  8. 16. To put things together
Down
  1. 1. To do something or act in a way because of something else
  2. 3. A change that creates different substances
  3. 5. A substance at the start of a chemical reaction
  4. 6. A change with no new products; the substance stays the same chemically
  5. 7. A way of writing what happens in a chemical reaction
  6. 8. To make a solution have a pH = 7
  7. 9. Mass of reactants and products are the same
  8. 11. A compound with pH7-14 and forms hydroxide (OH-) ions in solution
  9. 13. A solid that forms from a solution during a chemical reaction