Mr Burford's 4eme Chemistry crossword

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Across
  1. 6. Oxidation of iron (a chemical process)
  2. 7. This type of combustion produces a blue flame
  3. 9. this is conserved in chemical reactions (remember Lavoisier!)
  4. 10. A poisonous gas released by incomplete combustion
  5. 12. Energy is always_____from one form to another in chemical reactions
  6. 13. A chemical process that uses stomach acid and enzymes
  7. 14. the type of combustion that produces smoke (carbon particles)
  8. 16. A chemical made of only one type of atom
  9. 17. the color of a flame releasing less heat
  10. 18. This type of process that is difficult to reverse
Down
  1. 1. A physical process using filter paper
  2. 2. Light, heat, sound, kinetic, electrical, sound are all forms of this
  3. 3. smoke is made of this element
  4. 4. the color of a flame releasing more heat
  5. 5. A chemical process that occurs in cells (respiration is an example)
  6. 8. A chemical made of two or more different types of atoms bonded together
  7. 11. A physical process used to separate alcohol from water
  8. 15. This type of process is easy to reverse
  9. 19. A gas that is used a fuel in the home