1. Warm Up: Dissolving

2. Warm Up: Dissolving What does “dissolve” mean?
What kinds of things dissolve?
What do things dissolve in?

3. Dissolve
Dissolve: to make a solution of a substance by mixing with a liquid Example: to dissolve salt in water

4. Mixtures and Solutions Notes
Mixture Molecular View – Particle Diagrams

5. Introduction to Mixtures and Solutions
Video: The Science of Macaroni Salad Video Link

6. Mixture
Mixture: two or more different substances that are mixed but not combined chemically The chemical identities of the substances are not changed.

7. Solution Solution: a uniform mixture of two or more substances
*Uniform meaning the solution has only one color, one texture, and appears to be one substance.

8. Colloid
Mixture where the particles are uniformly distributed but not chemically bonded.
Normally opaque (not see thru)
Substance that consists of particles dispersed in another substance that are too small to see.
Milk, fog, mud

9. Suspension
Mixture where the particles of the individual substances are big enough to see.

10. Concentration
Concentration: the amount of a particular substance in a given quantity of mixture
How concentrated do you like your hot chocolate?

11. Concentration

12. Draw a Particle Diagram Kool-Aid Molecular View
Imagine that you could see the Kool-Aid particles at the molecular level…

13. Draw a Particle Diagram Kool-Aid Molecular View
Draw a diagram of the particles of Kool-Aid and water when: 1. Right when the Kool-Aid powder is added 2. After you have stirred the mixture together.

14. Pure Substances and Mixtures Reading and Lab
Read the article
Answer: Check Your Learning Questions 1-4
Receive you materials for the “Try This” lab
Answer: The lab questions A and B in notebook