chemical properties of matter

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Across
  1. 2. property, a property that needs a chemical reaction to be observed
  2. 4. a testing agent
  3. 5. to have a chemical reaction
  4. 7. pH of 7
  5. 9. pH less than 7
  6. 10. scale to measure acid or base
Down
  1. 1. temperature at which a substance can burn
  2. 3. able to easily burst into flame
  3. 6. pH more than 7
  4. 8. poisonous or venomous