Across
- 2. The substance that everything is made of and has mass and volume.
- 4. A change that can be undone and returned to its original state.
- 6. A chemical reaction involving burning and oxygen.
- 8. The smallest particle of an element that retains its properties.
- 10. A group of two or more atoms bonded together.
- 14. A chemical change where iron reacts with oxygen and water.
- 17. A solid formed when two solutions react together.
- 18. A state of matter with a fixed shape and volume.
- 20. A change that does not produce a new substance.
- 23. The process where a liquid changes into a gas.
- 24. A starting substance in a chemical reaction.
Down
- 1. The change from a liquid to a solid.
- 3. A change that produces one or more new substances.
- 5. A possible sign that a gas is being produced in a chemical reaction.
- 6. The process where a gas changes into a liquid.
- 7. A combination of substances that are not chemically joined together.
- 9. A substance formed when two or more elements chemically combine.
- 11. The change from a solid to a liquid.
- 12. A measure of how hot or cold something is.
- 13. A substance formed during a chemical reaction.
- 15. The process of a substance mixing evenly into a liquid.
- 16. A state of matter that spreads out to fill any container.
- 19. A pure substance made of only one type of atom.
- 21. A state of matter with a fixed volume but no fixed shape.
- 22. A smell that may indicate a chemical reaction has occurred.
- 23. Observations that show a chemical change has occurred.