Unit 4 Review 1

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Across
  1. 1. What bonds do during an exothermic reaction
  2. 5. To take in or soak up energy.
  3. 6. A reaction that absorbs heat from its surroundings.
  4. 8. What bonds do during an endothermic reaction.
  5. 9. Energy transferred between objects due to temperature difference.
  6. 10. A process in which substances change into new substances.
Down
  1. 2. To give off energy or heat.
  2. 3. Substances formed as a result of a chemical reaction.
  3. 4. A reaction that releases heat into its surroundings.
  4. 7. Substances that start a chemical reaction.
  5. 8. A connection between atoms in a molecule.