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HETEROGENEOUS AQUEOUS SOLUTIONS Section 17.4. After reading Section 17.4, you should know: The difference between a suspension, colloid, and solution.

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Presentation on theme: "HETEROGENEOUS AQUEOUS SOLUTIONS Section 17.4. After reading Section 17.4, you should know: The difference between a suspension, colloid, and solution."— Presentation transcript:

1 HETEROGENEOUS AQUEOUS SOLUTIONS Section 17.4

2 After reading Section 17.4, you should know: The difference between a suspension, colloid, and solution How to describe the Tyndall Effect

3 Suspensions Mixtures from which particles settle out upon standing. Heterogeneous Particle size ~ 1nm Example – sand and water or muddy water

4 Colloids Heterogeneous mixtures containing particles that are intermediate in size between suspensions and solutions Particle size 1nm – 100nm Cloudy or milky in appearance Examples: gelatin, smoke or whipped cream

5 Colloids demonstrate the Tyndall Effect – scattering of light in all directions

6 Emulsions – colloidal dispersions of liquids in liquids Will cause a polar and nonpolar substances to mix

7 After reading Section 17.4, you should know: The difference between a suspension, colloid, and solution How to describe the Tyndall Effect


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