Across
- 4. substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change
- 6. a chemical reaction accompanied by the absorption of heat
- 9. a substance obtained from another substance through chemical change
- 10. any of the substances participating in a chemical reaction
- 11. a thing that inhibits someone or something
Down
- 1. a chemical reaction accompanied by the evolution of heat
- 2. the symbolic representation of a chemical reaction
- 3. a process existing in or produced by nature (rather than by the intent of human beings)
- 5. matter cannot be created or destroyed in an isolated system
- 7. a substance produced by a living organism that acts as a catalyst to bring about a specific biochemical reaction
- 8. a process that involves rearrangement of the molecular or ionic structure of a substance