Across
- 5. a substance that is formed as the result of a chemical reaction
- 6. a substance that takes part in and undergoes change during a reaction.
- 9. reactants absorb heat energy
- 11. the production of chemical compounds by reaction from simpler materials
- 12. a reaction in which one element is substituted for another element
Down
- 1. a substance that speeds up a chemical reaction
- 2. an action performed or a feeling experienced in response to a situation or event.
- 3. the release of heat
- 4. the loss or removal of water
- 7. a group of atoms bonded together
- 8. a chemical process in which a substance reacts rapidly with oxygen and gives off heat
- 10. the symbolic representation of a chemical reaction in the form of symbols and chemical