Across
- 3. something taking part in an experiment
- 5. a combination of multiple substances
- 7. multiple elements combining chemically
- 8. smallest unit of chemical bond
- 11. stuff, takes up space
- 12. something that speeds up a chemical reaction
- 13. change something changes physically in an experiment
- 14. measuring kinetic energy
- 16. change chemical substances transform into different substances
Down
- 1. a reaction releasing chemicals into surroundings
- 2. extremely small unit of measurement
- 4. reactants absorb heat energy
- 6. substances formed due to reaction between substances
- 9. work, heat generated
- 10. property characteristics of a substance
- 11. to measure the amount of matter in something
- 12. molecule adhering to another
- 15. an action performed