Chemical Reaction

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Across
  1. 2. a burning candlelight can be an example of _________ _________
  2. 6. new substances formed by the reaction
  3. 7. a solid that forms from solution during a chemical reaction
  4. 8. the ratio of elements in a compound
  5. 9. the substances that undergo change in chemical reaction
  6. 10. reactant + reactant → product + product
Down
  1. 1. the study of matter and how matter changes
  2. 2. photosynthesis is an example of an _________ _________
  3. 3. burning is an example of a _______ _______
  4. 4. matter is not allowed to enter or leave
  5. 5. matter can enter from or escape to the surroundings
  6. 6. melting is an example of a _______ _______
  7. 11. a number placed in front of a chemical formula in an equation