CHEMICAL/ENERGY!!
Across
- 3. alfred noble's famous invention.
- 4. opposite of release, taking in a substance
- 6. a weak acid-base method used to get an idea of the pH scale of a chemical
- 7. the basic unit of a chemical element, such particles as a source of nuclear energy.
- 9. chemical reactions that release energy such as a wood burning (releases carbon, heat, water and energy.)
- 10. has the pH scale equal to 7 (7.2)
- 13. the process by which green plants use sunlight to synthesise foods from carbon dioxide and water.
- 15. a substance that will destroy and damage other substances when they come into contact with one another.
- 17. source of energy for all ecosystems on Earth
- 18. regular bases can't be dissolved while ______ can be dissolved
- 19. A substance that can react with an acid to form a salt and water, has a pH scale greater than 7.2
Down
- 1. a chemical substance that has the pH scale less than 7.2
- 2. the substance that goes into the reactor.
- 5. physical substance that which occupies space and possesses rest mass.
- 8. a green pigment, present in all green plants, responsible for the absorption of light to provide energy for photosynthesis.
- 9. when energy is absorbed from the surrounding substances such as an ice pack.
- 11. can't be dissolved.
- 12. the quality of being hot, high in temperature
- 13. a result of a reaction.
- 14. opposite of absorbing, letting go
- 16. can be dissolved.