Endothermic vs Exothermic

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Across
  1. 2. Measure of how hot or cold something is
  2. 5. Substances that start a chemical reaction
  3. 6. That increases reaction rate but is not consumed
  4. 7. Substances formed by a chemical reaction
  5. 9. Principle that matter cannot be created or destroyed
  6. 10. Reaction that releases heat
Down
  1. 1. Reaction that absorbs heat
  2. 3. Speeds up a chemical reaction
  3. 4. Power or heat involved in reactions
  4. 8. A connection between atoms