Across
- 1. a number places in front of a chemical symbol or formula\
- 6. a measure of how much a substance reacts when it is mixed with another substance
- 8. a substance that is present at the end of a chemical reaction
- 9. A substance that slows down a chemical or corrsion reaction
- 10. occurs when elements switch places in compounds.
Down
- 2. system does not allow matter to rnter or leave,but does allow energy to enter ot leave.
- 3. Reaction When energy is trandferred to the surroundings
- 4. the process of increasing the rate of a chemical reaction by adding a substance know as a catayst.
- 5. To bring about espcilly abruptly
- 7. of mass a principle stating the mass cannot be created or dystoryed