Crossword Puzzle: Chemical vs Physical Changes

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Across
  1. 4. Able to be undone.
  2. 6. A smaller component that makes up matter.
  3. 7. A change in a substance that does not change its molecules or identity, could be a change in state.
  4. 8. A process that involves rearrangement of molecules into new molecules.
Down
  1. 1. A usually irreversible change involving a change in chemical properties, resulting in the formation of a new substance.
  2. 2. A substance that is made during a chemical reaction.
  3. 3. A substance that undergoes change during a chemical reaction.
  4. 5. Any characteristic or quality that is measurable and describes how something is or looks.