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Heterogeneous vs. Homogeneous Mixtures. How are they different?  Homogeneous mixtures have uniform composition  Heterogeneous mixtures have non-uniform.

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Presentation on theme: "Heterogeneous vs. Homogeneous Mixtures. How are they different?  Homogeneous mixtures have uniform composition  Heterogeneous mixtures have non-uniform."— Presentation transcript:

1 Heterogeneous vs. Homogeneous Mixtures

2 How are they different?  Homogeneous mixtures have uniform composition  Heterogeneous mixtures have non-uniform composition

3 What type of mixtures are these?  Cheerios  Trail mix

4 Trail mix is HETEROGENEOUS Cheerios is homogeneous

5 Apple juice Orange juice with pulp Chocolate dough Italian salad dressing What type of mixtures are these?

6 Apple juice is homogeneous Orange juice with pulp is heterogeneous Chocolate dough is homogeneous Italian salad dressing is heterogeneous

7 Mayonnaise, which is mainly made of oil and water oil & water What type of mixtures are these?

8 homogeneous heterogeneous

9 mayonnaise, (made of oil & water) water How many components? How many phases? oil & water

10 water phase Water phase, oil phase, and many other phases. water phase and oil phase How many components? How many phases?

11  It depends on the type of mixture, whether they are homogeneous or heterogeneous How would you separate mixtures?

12 Homogeneous MixturesHeterogeneous Mixtures centrifugation coagulation distillation evaporation filtration hand picking magnetic separation sieving winnowing sedimentation Mixture Separation Techniques

13  True solution  Colloidal solutions  Suspensions These solutions typically differ in the particle size of the solute. Solution-Based Mixtures

14  True solution: solute size: <1 nm  Colloidal solutions: solute size: 1 nm to 100 nm  Suspensions: solute size: >100 nm These solutions typically differ in the manner in which the solutes reside in the solvent. Solution-Based Mixtures

15  True solutions: The solute is dissolved and is invisible  Colloidal solutions: The solute is dispersed uniformly throughout the solution; the presence of the solute is visible, but you cannot lift it out  Suspensions: The solute stays outside the solvent; that is, the solute is suspended These solutions typically differ in the manner in which the solute can be separated from the solvent. Solution-Based Mixtures

16 True solutionsColloidal solutionsSuspensions evaporationcoagulationfiltration distillationcentrifugationsedimentation Separation Techniques for Solution-Based Mixtures We will discuss coagulation, centrifugation and sedimentation

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