energy changes

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Across
  1. 2. These types of reactions are used in chemical cool packs used in sports
  2. 4. The decomposition of ammonium chloride is an example fo this type of reaction
  3. 5. An example of an everyday endothermic reaction
  4. 6. This means 'without water'
  5. 7. An exanple of a reversible reaction showing a colour change from blue to white involves this compound
  6. 9. An exothermic reaction gives .... heat
  7. 10. In chemical reactions this cannot be created or destroyed
Down
  1. 1. This would be present in an equation of a reversible reaction
  2. 3. An endothermic reaction takes ... heat
  3. 7. An example of an everyday exothermic reaction
  4. 8. These types of reactions are used in hand warmers