1. Unit 1: Measurement & Matter
Separating Mixtures
Unit 1: Measurement & Matter

2. Review: Mixtures elements compounds homogeneous heterogeneous physical
Two or more ________________ or _________________ NOT chemically combined.
No reaction between substances.
Mixtures can be uniform (called ________________________) and are known as solutions.
Mixtures can also be non-uniform (called ________________________).
• Mixtures can be separated into their components by ________________ means.
• The properties of a mixture are similar to the properties of its ________________ .
compounds
homogeneous
heterogeneous
physical
components

3. Key Question How can mixtures be separated?
Differences in physical properties can be used to separate mixtures.
According to your book, what are some methods are used to separate mixtures?
Filtration
Distillation

4. Filtration Describe how this works
Solid particles are separated from a liquid in a heterogeneous mixture
What physical property is used to separate the mixture?
Size of particles

6. Distillation Describe how this works
In a homogeneous mixture, a liquid substance (usually water) is separated from substances dissolved in it through boiling
What physical property is used to separate the mixture?
Boiling point

7. What’s the Difference?
When would you use filtration versus distillation to separate a mixture?
Filtration - heterogeneous mixture of solid in liquid
Distillation - homogeneous mixture of substance(s) dissolved in liquid

8. Watch Glass Evaporation
Describe how this works
Particles are separated from a liquid in a mixture
What physical property is used to separate the mixture?
Boiling point // evaporation

9. Crucible Evaporation Describe how this works
Particles are separated from a liquid in a mixture
What physical property is used to separate the mixture?
Boiling point // evaporation

10. Chromatography Describe how this works
Particles in a mixture are separated as they are carried up the chromatography paper by the solvent
What physical property is used to separate the mixture?
Particle size
Solubility

11. Chromatography

12. What Would You Do?
How could you separate a mixture of sand and table salt?

13. Add water to the mixture to dissolve the table salt.
Filter the mixture to remove the sand.
Evaporate the mixture to remove the water.

14. Homework HW 1.12 - Read p. 49-50 by Tues. 9/23/14
Elements Quiz on Wed. 9/24!