Across
- 2. Ammonium nitrate & calcium chloride are called this
- 4. A reaction plants use to make sugar and O2
- 6. A violent reaction
- 9. The electrical attractive force between atoms
- 10. Specific part of interest in the study
- 12. A chemical change
- 13. This is the energy required to start reactions
- 14. Energy that is absorbed or released in a reaction
Down
- 1. Reaction where heat is absorbed
- 2. Include the rest of the universe
- 3. Substances able to burn, source of energy
- 5. Reaction where heat energy is released
- 7. The new substances in a reaction
- 8. The burning of fuels with oxygen
- 11. Substances that change in a reaction