Heterogeneous Mixtures and Separations

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Presentation transcript:

Heterogeneous Mixtures and Separations Physical Science 2014-2015

Types of Heterogeneous Mixtures Colloid Particles are suspended Particles do not settle into layers Light cannot pass through Fog, smoke, marshmallow, jello?

Types of Heterogeneous Mixtures 2. Suspension Contains a liquid and a solid mixed together at first Over time the two phases settle (separate into layers) Muddy water, sand in water

Solution vs. Suspension vs. Colloid

Modes of Separation

Evaporation Used to separate a solute that has been dissolved in a solute.

Centrifugation Used to separate suspensions by density

Filtration Used to separate a suspension of two substances by the size of their particles

Distillation Use to separate liquids that dissolve together that have different boiling points

Sand and Salt Separation Salt will dissolve in water, while sand will not. How can we separate sand from water? Let’s try this separation in lab.