Across
- 2. chemical reaction that involves the release of energy in the form of heat or light
- 4. the total heat content of a system
- 6. 2 atoms slam together to form into a heavier atom
- 8. the symbol for enthalpy change
- 9. branch of chemistry concerned with he quantities of heat evolved or absorbed during chemical reactions
- 11. the transition from the solid phase to the gas phase
- 12. two substances in physical contact with each other exchange no heat energy
- 13. everything that is not directly involved in the reaction
- 15. process of measuring the amount of heat released or absorbed during a chemical reaction
- 16. the process in which liquid state changes into the vapor state
Down
- 1. show the temperature change as a substance is heated up/ cooled down
- 3. when a gas turns into a liquid
- 5. the amount of energy absorbed from one system to its surroundings
- 7. collection of objects that can be identified
- 10. chemical reactions in which the reactions absorb heat energy from the surroundings to form products
- 14. transition of a substance directly from a gas to a liquid