PHYSICAL AND CHEMICAL CHANGE

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Across
  1. 2. — The state of matter ice cream starts in
  2. 7. — The state of matter melted ice cream becomes
  3. 8. — A very reactive metal (forms table salt)
  4. 11. — Breaking down of rock caused by water, ice, or wind (8,10)
  5. 12. — Solid, liquid, or gas
  6. 13. — Substances in the body that cause chemical changes in food
  7. 15. — A change where a substance keeps its identity (8,6)
  8. 16. — When water turns into ice
  9. 17. — The change from solid to liquid
  10. 19. — What happens to water when it freezes in cracks
  11. 20. — A change that forms one or more new substances (8,6)
Down
  1. 1. — One thing that can change in a physical change
  2. 3. — The gas that reacts with iron to form rust
  3. 4. — The metal that rusts
  4. 5. — The process of breaking food down in the body
  5. 6. — The substance formed when iron reacts with oxygen
  6. 8. — What changes when an object is broken or crushed
  7. 9. — A poisonous green gas (group 7)
  8. 10. — The breaking down of rocks and surfaces over time
  9. 14. — The safe substance formed from sodium and chlorine
  10. 18. — When substances change into new substances