Across
- 2. chemical equation has the same # of atoms of each element on both sides of the equation
- 4. reaction occurs when a substance reacts with oxygen to produce energy in the form of heat and light
- 5. displacement reaction when one element replaces another element in a compound
- 6. energy minimum amount of energy needed to start a reaction
- 8. reaction when the energy is needed in a form of heat
- 11. displacement reaction the positive ion of 1 compound replaces the positive ion of the other to form 2 new compounds
- 13. new substance produced
- 14. equation way to describe a chemical reaction using chemical formulas and other symbols
Down
- 1. reaction two or more substances combine to form another substance
- 3. reaction occurs when one substance breaks down into 2 or more substances
- 7. substance that speeds up a chemical reaction without being permanently changed itself
- 8. reaction when the energy given off in a reaction is primarily in the form of heat
- 9. substance that reacts
- 10. substances that are used to slow down a chemical reaction
- 12. of reaction the speed at which reactants are consumed and products are produced in a given reaction