1. Introduction to Matter Vocabulary

2. Matter
Anything that has mass or takes up space

4. Atom
The smallest particle of an element that has the properties of that element

5. Element
A pure substance that cannot be broken down into a simpler substance by ordinary chemical changes. An element consists of atoms of only one type.

7. Pure Substance
A single kind of matter that is pure and has a specific set of properties

8. Compound
A substance made up of two or more different types of elements chemically combined

9. Compound

10. Molecule
A group of atoms that are held together by covalent bonds so that they move as a single unit

12. Mixture
Matter that consists of two or more substances mixed together but not chemically combined

13. Heterogeneous Mixture
A mixture in which pure substances are unevenly distributed throughout the mixture

14. Homogeneous Mixture
A mixture in which pure substances are evenly distributed throughout the mixture

15. Physical Change
A change in a substance that does not change its identity

16. Physical Change Cutting Tearing Folding Writing on Painted Melting
Boiling
Freezing

17. Physical Property
A characteristic of a pure substance that can be observed without changing it into another substance

18. Chemical Property
A characteristic of pure substances that describes how it can form a new substance

19. Chemical Change
A change in which one or more substances combine or break apart to form new substances

20. Chemical Change NEW matter is formed and CANNOT be undone Burning
Rusting
Cooking
Digesting food
Leaves changing colors
Food rotting