Mr Brown's Year 7 Crossword

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Across
  1. 4. The best of the three sciences
  2. 10. The best chemistry teacher...
  3. 12. A liquid turning to a gas
  4. 13. Some reactions cause a change in T________________
  5. 16. The variable we measure
  6. 17. A solid becoming a liquid
  7. 18. A substance made from one type of atom
  8. 19. Some reactions cause a change in C__________
  9. 21. When a solid forms from a reactions P__ci__tat_
Down
  1. 1. The movement of particles from a high concentrations to a low concentration
  2. 2. This type of change is reversible
  3. 3. The substances made in a chemical reactions
  4. 5. The variable we change
  5. 6. When a liquid forms a solid
  6. 7. The smallest part of an element
  7. 8. The variables we keep the same
  8. 9. A substance made of two or more different elements chemically bonded
  9. 11. When Sir lit the sparkler, L______ was given off
  10. 14. The substances that react in a chemical reaction
  11. 15. This type of change is normally irreversible
  12. 18. Gas particles have the highest kinetic _________ (6)
  13. 20. __________ the red nosed reindeer