Across
- 7. The temperature at which a liquid changes into a solid
- 9. A mixture that forms when one substance dissolves another
- 13. pure substance consisting only of atoms that all have the same numbers of protons in their nuclei
- 18. The classification of matter as a solid, a liquid, or a gas
- 19. A gas turning into a liquid
- 20. A form of matter that has a definite shape and volume
Down
- 1. a point on a surface wave where the displacement of the medium is at a maximum
- 2. the lowest point below the rest position A force that opposes motion between two surfaces that are in contact
- 3. A combination of compounds and elements that has not formed a new substance
- 4. Amount of space occupied by an object
- 5. chemical element, a source of nuclear energy
- 6. is The temperature at which a liquid becomes a gas.
- 8. A state of matter with no definite shape or volume
- 10. a substance formed from two or more elements chemically united in fixed proportions
- 11. the characteristics of a substance that can be observed or measured without changing the substance
- 12. the ability or tendency to float in water or air or some other fluid.
- 14. a group of atoms bonded together representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
- 15. A state of matter that has no definite shape but has a definite volume.
- 16. A measure of the amount of matter in an object
- 17. The change in state from a solid to a liquid