1. Section 1: Types of Mixtures
Mixtures can be either heterogeneous or homogeneous. K
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What I Learned

2. 4(D) Classify matter as pure substances or mixtures through investigation of their properties.
10(E) Distinguish between types of solutions such as electrolytes and nonelectrolytes and unsaturated, saturated, and supersaturated solutions.
2(E) Plan and implement investigative procedures, including asking questions, formulating testable hypotheses, and selecting equipment and technology, including graphing calculators, computers and probes, sufficient scientific glassware such as beakers, Erlenmeyer flasks, pipettes, graduated cylinders, volumetric flasks, safety goggles, and burettes, electronic balances, and an adequate supply of consumable chemicals.
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Types of Mixtures

3. Essential Questions
How do the properties of suspensions, colloids, and solutions compare?
What are the types of colloids and types of solutions?
How are the electrostatic forces in colloids described?
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Types of Mixtures

4. Vocabulary Review New solute suspension colloid Brownian motion
Tyndall effect
soluble
miscible
insoluble
immiscible
Types of Mixtures
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5. Heterogeneous Mixtures
A heterogeneous mixture is a mixture that does not have a uniform composition and in which the individual substances remain distinct.
Suspensions are mixtures containing particles that settle out if left undisturbed. Suspensions can also be separated by filtering.
Colloids are heterogeneous mixtures of intermediate sized particles (between 1 nm and 1000 nm) and do not settle out, nor can they be filtered apart.
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Types of Mixtures

6. Heterogeneous Mixtures
The most abundant substance in a mixture is the dispersion medium.
Colloids are categorized according to the phases of their particles.
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Types of Mixtures

7. Heterogeneous Mixtures
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Types of Mixtures

8. Heterogeneous Mixtures
Brownian motion is the jerky, random movements of particles in a liquid colloid, from the results of particle collisions.
The Tyndall effect is the scattering of light by dispersed colloid particles.
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Types of Mixtures

9. Homogeneous Mixtures
Solutions are homogeneous mixtures that contain two or more substances called the solute and solvent.
Most solutions are liquids, but gaseous and solid solutions exist.
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Types of Mixtures

10. Homogeneous Mixtures
A substance that dissolves in a solvent is soluble.
Two liquids that are soluble in each other in any proportion are miscible.
A substance that does not dissolve in a solvent is insoluble.
Two liquids that can be mixed but separate shortly after are immiscible.
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Types of Mixtures

11. Review Essential Questions Vocabulary
How do the properties of suspensions, colloids, and solutions compare?
What are the types of colloids and types of solutions?
How are the electrostatic forces in colloids described?
Vocabulary
suspension
colloid
Brownian motion
Tyndall effect
soluble
miscible
insoluble
immiscible
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Types of Mixtures