Exo/Endo crossword puzzel

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Across
  1. 3. To strike or hit somebody or something with any amount of force.
  2. 5. A measure of how much matter is present in a substance.
  3. 8. A chemical reaction when heat is absorbed.
  4. 9. Transfer of energy through electromagnetic waves.
  5. 10. movement of heat though a solid object; also occurs when objects are touching.
Down
  1. 1. movement through liquids and gases.
  2. 2. A substance that takes part in and undergoes change during a chemical reactant.
  3. 4. reaction A chemical reaction in which heat is released.
  4. 6. The process by which one or more substances change to produce one or more different substances.
  5. 7. A substance produced during a chemical reaction.