Across
- 7. Accompanied by the release of heat.
- 8. A process that involves rearrangement of the molecular or ionic structure of a substance, as opposed to a change in physical form
Down
- 1. the science that deals with the composition and properties of substances and various elementary forms of matter.
- 2. An instance of one moving object or person striking violently against another.
- 3. Accompanied by or requiring the absorption of heat.
- 4. The minimum amount of energy required to initiate a reaction
- 5. is the rate at which the reactants of a chemical reaction form the products.
- 6. A substance that slows down or prevents a particular chemical reaction or other process.
- 9. A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
