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Warm-Up

Warm-Up. In your own words, define the word mixture. Solution Chemistry. A Closer Look a Mixtures. Solutions. Homogeneous mixture of two or more substances in a single phase Two components Solute- the substance being dissolved Solvent- the substance doing the dissolving

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Warm-Up

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  1. Warm-Up • In your own words, define the word mixture.

  2. Solution Chemistry A Closer Look a Mixtures

  3. Solutions • Homogeneous mixture of two or more substances in a single phase • Two components • Solute- the substance being dissolved • Solvent- the substance doing the dissolving • Can be a mixture of solids, liquids, and gases • Ex- air, brass, salt water

  4. Suspension • A mixture in which the solute particles are so large, the eventually settle out unless the mixture is constantly stirred • Particles larger than 1000nm in diameter • Particles can be separated using filter paper • Ex- muddy water

  5. Colloid • Mixtures with solute particles between 1 and 1000nm in diameter • Particles able to remain suspended throughout the solvent • Ex- milk, smoke, gelatin, foams

  6. How can we tell them apart? • Suspensions will eventually settle out • For solutions and colloids, we can refer to the Tyndall Effect • If we shine a light on a mixture, and the light does not scatter, it is a solution • If the light does scatter, it is a colloid.

  7. Types of Solutes • Electrolyte- A substance that dissolves in water to give a solution that conducts electric current • Nonelectrolyte- A substance that dissolves in water to give a solution that does not conduct an electric current

  8. Three Categories of Solutions • Unsaturated solution- A solution that contains the less than the maximum amount of dissolved solute • Saturated solution- A solution that contains the maximum amount of dissolved solute • Supersaturated solution- A solution that contains more than the maximum amount of dissolved solute

  9. Exit Ticket: To be Turned in • Explain the difference between a solution, suspension, and a colloid. Explain how we can tell them apart.

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