Unit 2: Matter

3. mixture a mixture in which substances are evenly distributed throughout the mixture
4. point the temperature at which a liquid becomes a gas
6. change a change in which energy is absorbed (feels cold)
9. a combination of two or more substances that are not chemically combined
10. a substance made up of atoms of two or more different elements
12. change a change from one state (solid or liquid or gas) to another without a change in chemical composition
14. property a property used to characterize materials in reactions that change their identity
16. formula a combination of chemical symbols and numbers to represent a substance
17. the change of state from a liquid to a solid
19. the smallest unit of a substance that keeps all of the physical and chemical properties of that substance
23. anything that has mass and takes up space
25. the process of liquid changing state into gas
27. method of separating a mixture of liquid and solid using filter paper
29. a substance that cannot be separated or broken down into simpler substancesby chemical means; all atoms of an element have the same atomic number
30. separation of a homogeneous mixture by evaporation of a liquid or by using an ice water bath
32. point the temperature and pressure at which a solid becomes a liquid
33. A change of state from gas to solid

1. the process of a material becoming incorporated uniformly into another, or of two materials mixing together evenly
2. mixture A mixture in which different materials can be distinguished easily
5. a state of matter having no definite shape but a definite volume
7. the change of a substance from a solid to a gas
8. the degree of hotness or coldness of a body or environment (corresponding to its kinetic energy)
11. substance a sample of matter; either a single element or a single compound, that has definite chemical and physical properties
13. the process of changing from a gaseous to a liquid state
15. process that separates compounds in a homogeneous liquid using mobile and stationary phases
18. of conservation of mass a fundamental principle that matter cannot be created or destroyed
20. change a change in which energy is given off (feels hot)
21. the smallest unit of an element that maintains the properties of that element
22. property a characteristic of a substance that does not involve a chemical change, such as density, color, or hardness
24. the process whereby heat changes something from a solid to a liquid
26. method of separating a mixture using different boiling points
28. state of matter that does not have a definite shape or volume
31. a state of matter having definite shape and volume