Unit 3

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Across
  1. 3. The total number of atoms must stay the same according to this law.
  2. 8. A reaction that releases energy to the surroundings.
  3. 9. A reaction that absorbs energy from the surroundings.
Down
  1. 1. The substances formed in a chemical reaction.
  2. 2. A number written in front of a chemical formula to balance it.
  3. 4. The substances you start with in a chemical reaction.
  4. 5. The energy needed to start a reaction.
  5. 6. The average kinetic energy in an object.
  6. 7. The mixture of products and reactants creating a new substance.