Across
- 1. A change in a substance that is reversible. (8)
- 3. Something that cannot be created or destroyed, only transferred between stores. Examples are kinetic, thermal, nuclear... (6)
- 5. The state of matter in which a substance has particles that slide over each other. (6)
- 6. The law that describes how the amount of substance does not change during a chemical reaction - conservation of ____. (4)
- 9. A substance that speeds up chemical reactions. (8)
- 11. What a substance is if it has a pH of more than 7. (6)
- 12. Something burned to release energy. (4)
- 14. A reaction that transfers energy to the surroundings, so the temperature of the surroundings increases. (10)
- 15. An exothermic reaction between a substance and oxygen in the air. The scientific word for burning. (10)
- 17. What a substance is if it has a pH of less than 7. (4)
Down
- 2. A change in a substance that is not reversible, and makes something new. (8)
- 4. A reaction that takes in energy from the surroundings, so the temperature of the surroundings decreases. (11)
- 7. The state of matter in which a substance has particles in a fixed, regular arrangement. (5)
- 8. A substance that takes part in a chemical reaction. (8)
- 10. The state of matter in which a substance has particles that move freely, randomly, and quickly. (3)
- 13. A substance that is formed in a chemical reaction. (7)
- 16. The pH of a substance after it has undergone a neutralisation reaction. (7)