1. BELLWORK 8/21/17 SOLIDS LIQUIDS GASES Volume & Shape
Definite Volume & Shape
Spacing between particles
Amount of Energy
High

2. Post – Lab Questions

3. Classification of Matter

5. Classification of Matter
Pure Substance – Every sample of the substance has the same composition and characteristics.
Example: Pure Water, Pure gold, vinegar

6. Pure Substances
Pure substances can also be divided into 2 categories: compounds and elements.

7. Pure Substances
Compound – Two or more elements chemically bonded together.
Examples:
Carbon Dioxide (CO2)
Water (H2O)
Salt (NaCl)
Sucrose (C12H22O11)

8. Pure Substances
Elements – Substances made up of only one type of atom.
- Cannot be separated by any physical OR chemical process.
Examples:
Carbon
Helium
Gold

9. Mixtures
Mixture – A blend of two or more kinds of matter, each of which keep their own identity and properties.
Even though it may look different, it is still copper and zinc. Each metal retains its own properties like melting point.
Example: Copper and Zinc can be mixed together to produce brass.

10. Heterogeneous Mixtures
Some mixtures are impure .
Heterogeneous mixture – Uneven distribution of substances. (Very impure)
- You can see the different parts.
Examples:
Sand
Granite
Wood

11. Homogeneous Mixtures
Homogeneous Mixture – Components are evenly mixed. (More pure than heterogeneous)
Ex: sugar water, saltwater, air, quartz
Seawater distillation plant

12. Checkpoint 1. 2. 3. 4. 5. 6.

13. ANSWERS 1. oil and water – heterogeneous 2. milk – homogeneous
3. tea – homogeneous
4. chicken noodle soup – hetero
5. orange juice (without pulp) – homo
6. sand - heterogeneous