1. Chapter 2-1
What is Matter?

2. Chemistry Chemistry – what things are made of
What their properties are
How they interact and change
Used everyday in life

3. Matter Matter - anything that has mass and occupies space
Air is matter!
Light, energy and sound aren’t

4. Elements Everything is built from atoms.
Element – substance that cannot be broken down by chemical means

6. Compounds Compound – substance made of 2 or more different elements
Chemically combine
Example – Water or H2O
Elements hydrogen (2 atoms) and oxygen (1 atom) combine to form water

8. Molecules
Molecules – smallest unit of a substance that behaves like the substance
More than one atom together
Same or different atoms

9. Chemical Formula
Chemical formula – shows how many atoms of each element are in a substance
# in front of letter = # of molecules
# in subscript = # of atoms
3C12H22O11
3 molecules of sugar
Each molecule contains given # of atoms

10. Pure Substances
Materials are made of a pure substance or a mixture of substances.
Pure substance - matter that has a fixed composition and definite properties
Elements or compounds

11. Mixtures
Mixture – combination of 2 or more substances that are not chemically combined
Example - Pizza

13. Heterogeneous Mixture
Heterogeneous mixture – substances aren’t mixed uniformly and aren’t distributed evenly

14. Heterogeneous Mixtures

15. Homogeneous Mixtures
Homogeneous mixture - contains two or more gaseous, liquid, or solid substances blended evenly throughout.

18. Miscible vs Immiscible
Miscible – homogenous mixture of liquids or gas
Immiscible – heterogeneous mixture of liquids
Oil and water

19. Gas mixed with Liquids Carbonated drinks Noncarbonated drinks
Lemon meringue pie