Across
- 3. : Example of a chemical change when metal reacts with oxygen
- 4. : Matter is not created or destroyed, only changes form
- 5. : A change that can be undone
- 7. : A characteristic that describes how a substance reacts
- 9. : A change that creates one or more new substances with different properties
- 10. : Example of a chemical change that gives off light and heat
- 12. : A change in this can indicate a chemical reaction
- 13. : Energy given off during a chemical change
- 15. : Mixing a solid in a liquid without forming a new substance
- 16. : Change in this can show a chemical reaction has occurred
- 18. : A new smell appearing is a sign of a chemical change
- 19. : Bubbles or fizzing show this has been produced in a chemical change
Down
- 1. : A change that cannot be undone
- 2. : Anything that has mass and takes up space
- 6. : Example of a physical change when ice becomes water
- 8. : A change in the size, shape, or state of matter — no new substance is formed
- 11. : A physical change when liquid water becomes gas
- 14. : This can be produced during some chemical reactions
- 17. : A characteristic that can be observed without changing the substance