Module 4 IQ1

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Across
  1. 3. what symbol is given in a chemical reaction of the enthalpy reactants
  2. 6. when the total chemical energy of the products of a chemical reaction is greater than the total chemical energy of the reactants, energy is absorbed from the surrounding environment
  3. 7. what unit is represented for energy
  4. 8. usually regarded at everything else in a reaction
  5. 9. the chemical energy of a substance is sometimes called it’s heat content or what
  6. 11. what changes the activation energy of a reaction
Down
  1. 1. when the total chemical energy of the products of a chemical reaction is less than the total chemical energy of the reactants, the excess energy is releases into the surroundings
  2. 2. heat given off when one mole of substance is burnt completely in an excess of oxygen
  3. 4. energy cannot be created or ______
  4. 5. melting ice is an example ____ change
  5. 10. stating that the heat absorbed/evolved in any chemical reaction is a fixed quantity