Across
- 3. reaction a chemical reaction in which one substance breaks down into two or more substances
- 7. a chemical reaction that absorbs energy primarily in the form of heat
- 9. reaction a chemical reaction in which two or more substances combine to form another substance
- 12. a reaction in which the energy released is in the form of heat
- 13. reaction a chemical reaction in which the positive ion of one compound replaces the positive ion of another compound
- 14. means "written below"
- 15. the new chemicals presented after a reaction
Down
- 1. the chemicals presented before a reaction
- 2. reaction a chemical reaction in which one element replaces another element in a compound
- 4. when water is the solvent for a reaction
- 5. an insoluble compound that comes out of solution during a double-displacement reaction
- 6. a number that represents the number of units of each chemical taking part in a reaction
- 8. Reaction a change in which one or more substances are converted into new substances while energy is released or absorbed
- 10. reaction a reaction that occurs when a substance reacts with oxygen to release energy in the form of heat and light
- 11. Number the amount of valence electrons gained or lost between metals and nonmetals to become stable