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Suspensions and Colloids. Colloids and suspensions are heterogeneous mixtures.

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Presentation on theme: "Suspensions and Colloids. Colloids and suspensions are heterogeneous mixtures."— Presentation transcript:

1 Suspensions and Colloids

2 Colloids and suspensions are heterogeneous mixtures

3 Suspensions and Colloids Suspensions and colloids are NOT solutions. Suspensions: The particles are so large that they settle out of the solvent if not constantly stirred. Colloids: The particle is intermediate in size between those of a suspension and those of a solution.

4 Smog – A Suspension

5 Types of Colloids Examples Dispersing Medium Dispersed Substance Colloid Type Fog, aerosol spraysGasLiquidAerosol Smoke, airborne bacteriaGasSolidAerosol Whipped cream, soap sudsLiquidGasFoam Milk, mayonnaiseLiquid Emulsion Paint, clays, gelatinLiquidSolidSol Marshmallow, StyrofoamSolidGasSolid foam Butter, cheeseSolidLiquidSolid emulsion Ruby glassSolid Solid sol

6 The Tyndall Effect Colloids scatter light, making a beam visible. Solutions do not scatter light. Which glass contains a colloid? solution colloid

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