1. Refresh – Answer this Review Question in your science notebookPP Pp Pp pp
Match the following genotypes with an example
1. Homozygous dominant A. Pp
2. Heterozygous B. pp
3. Homozygous recessive C. PP

2. Set – Get ready for today’s learning activity
List the mixtures from the jars lab & discuss how you could determine that each were mixtures.
Hint: Look back at your science notebook for the Jars Lab activitiy.

3. Now…Take notes on today’s lesson. Different Kinds of Mixtures
There will be lots of new vocabulary today that you will need to remember.
Follow along with the note-taking guide.
At the end of the lesson, you need to be able to explain the differences in the types of mixtures discussed in the lesson and give an example.

4. Mixing it up With Mixtures
8th Grade Science
Use with Note-taking Guide
Questions & Lesson Guide for
Mixture Lesson

5. Mixtures + = Can be separated physically.
They are substances held together by physical forces, not chemical.
Can be separated physically.
Solutions are one kind of mixture.

6. Solutions
Solutions are mixtures of two or more substances that are spread out evenly.
Example: salt - water solution

7. Solute Solvent The substance to be dissolved. (salt)
The substance doing the dissolving.
(water)
Images are from

8. Making a Solution

9. Concentration of Solutions
Concentrated means strong
examples; frozen orange juice in a can, powdered milk, can of soda,
Diluted means weak
examples; orange juice mixed in jug with water, powdered milk mixed with water, soda in melted ice

10. Solutions are homogeneous mixtures
Because they look the SAME throughout the mixture.

11. Homogeneous Uniform Distribution (can’t pull stuff out)
Example: Sugar and Water

12. Heterogeneous Example: Sand in a glass of water.
The substances are not uniformly mixed. (can pull pieces out)
Example: Sand in a glass of water.

13. Suspensions
Are heterogeneous mixtures consisting of parts that are visible to the naked eye.
Substances will settle over time.
Directions: Shake well before using.
Example: the ingredients in salad dressing

14. Colloids
Particle sizes are in between the size of particles found in solutions and suspensions .
Can be mixed and remain evenly distributed without settling out.

15. Colloids are homogeneous mixtures
Because they look the SAME throughout the mixture.

17. Assess – How much did you learn?
Name the 3 kinds of mixtures?
How can you tell the mixtures apart? How is their appearance different?
Give an example of each.