Physical and Chemical Properties

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Across
  1. 2. Used to measure how acidic or basic a substance is
  2. 3. describes how easily a substance can catch fire and burn
  3. 4. compound that gives off hydrogen ions (H⁺)
  4. 7. can only be observed when matter changes into an entirely new substance
  5. 8. how easily a substance can combine chemically with other substances
  6. 10. change in the form or appearance of a substance, but its identity stays the same
Down
  1. 1. are characteristics that can be observed or measured without changing the matter into a different substance
  2. 5. when one or more new substances are formed
  3. 6. compound that has hydroxide ions (OH⁻)
  4. 9. charged atoms