Matter and Energy

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Across
  1. 3. the new substances formed by a chemical reaction
  2. 6. a chemical substance that contains a lot of hydrogen ions and has a lower pH
  3. 7. When two or more substances combine and molecules split apart and form new molecules
  4. 9. When matter changes from solid to liquid to gas or from gas to liquid to solid
Down
  1. 1. the substances that are mixed together to create a chemical reaction
  2. 2. Two or more atoms bonded together
  3. 4. the motion of molecules within a substance which creates heat
  4. 5. a chemical substance that contains less hydrogen ions and has a higher pH
  5. 8. a measure of the amount of hydrogen ions in a substance to determine how acidic or basic a substance is
  6. 10. the smallest unit of matter