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Solution, Suspensions and Colloids

Solution, Suspensions and Colloids. Mixtures. Demo. Write down your observations & notes. Solution. Solutions – soluble mixtures. Homogenous mixture Small particle size, invisible to the naked eye Salt water, sugar water. Demo. Write down your observations & notes. Colloid.

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Solution, Suspensions and Colloids

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  1. Solution, Suspensions and Colloids Mixtures

  2. Demo • Write down your observations & notes

  3. Solution

  4. Solutions – soluble mixtures • Homogenous mixture • Small particle size, invisible to the naked eye • Salt water, sugar water

  5. Demo • Write down your observations & notes

  6. Colloid

  7. Colloids: floating insoluble mixtures • Medium sized particles held together by Brownian motion (erratic motion of particles bumping into one another) • Milk, paint, fog, honey, smoke, ink, gum, gelatin, marshmallows, butter, cosmetics, shampoos, oil and water with soap (emulsifier) • Tyndall Effect – Light scattered due to Brownian motion

  8. Tyndall Effect

  9. Demo • Write down your observations & notes

  10. Suspension

  11. Suspensions – sinking insoluble mixtures • Mixtures that contain particles that settle out if left undisturbed. • Particles > 10-6m • Can be filtered • Blood, aerosols, cornstarch and water, Italian salad dressing,

  12. This is raw milk – straight from the cow Cream Layer Milk layer

  13. In summary

  14. The difference is…..

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