1. Elements, Compounds, and Mixtures
Sodium Sodium Chloride Salt Water

2. Elements
Elements are pure substances that cannot be broken down into other substances

3. Compounds
Compounds are pure substances made of 2 or more elements chemically combined.
Examples:
CO2 is Carbon Dioxide
CO is Carbon Monoxide
C12H22O11 is Sugar

4. Compounds
In a compound, the properties are different from those of the individual elements.
C12H22O11 is Sugar
Carbon is a black solid
Hydrogen is a gas
Oxygen is a gas

5. CO2 is a molecule and a compound
Compounds
What is the difference between a molecule and a compound?
Molecule: Particle made of two or more atoms bonded together
Compound: Substance made of two or more elements chemically combined
O2 is a molecule
CO2 is a molecule and a compound

6. Mixtures
Mixtures are 2 or more substances that are mixed together but not chemically combined.
Examples:
Soil
Ice Cream
Salad
Bowl of Cereal with Milk

7. Mixtures
In a mixture, the properties of each individual substance stay the same.
The cereal stays cereal
The milk stays milk

8. Heterogeneous mixtures
Mixtures where the substances are unevenly distributed throughout the mixture

9. Homogeneous mixtures
Mixture where the substances are evenly distributed throughout the mixture
Peanut Butter

10. How to tell . . . If it is on the periodic table . . . Element
If it has a chemical formula Compound
CO2
H2O
Na2CO3
Anything else Mixture