Across
- 2. - a homogeneous mixture that is opaque
- 5. - the smallest particle of an element
- 7. change - change that occurs when a substance reacts and forms one or more new substances
- 10. - a substance that cannot be broken down into simpler substances
- 11. - the phase change in which a gas changes directly into a solid without first changing into a liquid
- 15. - a change in which a system releases energy to its surroundings
- 17. change - a change that occurs when some properties of a material change, but the substances in the material stay the same
- 19. Substance - matter that always has exactly the same composition; an element or compound
- 20. property - any characteristic of a material that can be observed or measured without changing the composition of the substance
- 21. - the process that changes a substance from a liquid to a gas at temperatures below the substance’s boiling point
- 22. - the state of matter that has neither a definite shape nor a definite volume
- 23. mixture - a type of mixture in which the parts of the mixture are noticeably different from one another
- 25. - a material’s ability to allow heat or electric charges to flow
- 26. Point - the temperature at which a substance changes from solid to liquid
- 27. - the ability of a solid to be hammered without shattering
- 28. - the phase change in which a substance changes from a liquid into a gas or vapor
- 29. Point - the temperature at which a substance boils (changes from a liquid to a gas)
Down
- 1. - the state of matter in that has a definite volume but not a definite shape
- 2. property - the ability to produce a change in the composition of matter
- 3. - the state of matter that has a definite shape and definite volume
- 4. - a material’s ability to burn in the presence of oxygen
- 6. - a homogeneous mixture that is transparent and forms when substances dissolve
- 8. - a change in which a system absorbs energy from its surroundings
- 9. - the phase change in which a substance changes from a solid directly to a gas without changing to a liquid first
- 12. - a heterogeneous mixture that separates into layers over time
- 13. - a substance that is made from two or more simpler substances that are chemically combined in a specific ratio
- 14. change - a reversible physical change that occurs when a substance changes from one state of matter to another
- 16. - the phase change from a gas to a liquid
- 18. mixture - a type of mixture in which the substances are evenly distributed and it looks like a single substance
- 24. - a process that separates materials based on the size of their particles