1. Section 1 Types of Mixtures
Chapter 12
Solutions
Solution - homogeneous mixture of two or more substances in a single phase.
Solvent - dissolving medium in a substance
Solute - substance dissolved in a solution

2. Chapter 12 Solutions Visual Concepts
Click below to watch the Visual Concept.
Visual Concept

3. Solutes, Solvents, and Solutions
Visual Concepts
Chapter 12
Solutes, Solvents, and Solutions
Click below to watch the Visual Concept.
Visual Concept

4. Visual Concepts
Chapter 12
Types of Solutions

5. Particle Models for Gold and Gold Alloy
Section 1 Types of Mixtures
Chapter 12
Particle Models for Gold and Gold Alloy

6. Section 1 Types of Mixtures
Chapter 12
Suspension - particles in a solvent are so large that they settle out unless the mixture is constantly stirred or agitated
For example, a jar of muddy water consists of soil particles suspended in water. The soil particles will eventually all collect on the bottom of the jar, because the soil particles are denser than the solvent, water.
Particles over 1000 nm in diameter—1000 times as large as atoms, molecules or ions—form suspensions.

7. Chapter 12 Suspensions Visual Concepts
Click below to watch the Visual Concept.
Visual Concept

8. Section 1 Types of Mixtures
Chapter 12
Colloids - particles that are intermediate in size between those in solutions and suspensions
The particles in a colloid are small enough to be suspended throughout the solvent by the constant movement of the surrounding molecules.
Colloidal particles make up the dispersed phase, and water is the dispersing medium.
example: Mayonnaise is a colloid.
It is an emulsion of oil droplets in water.

9. Chapter 12 Colloids Tyndall Effect
Section 1 Types of Mixtures
Chapter 12
Colloids
Tyndall Effect
Tyndall effect - occurs when light is scattered by colloidal particles dispersed in a transparent medium.
example: a headlight beam is visible from the side on a foggy night
The Tyndall effect can be used to distinguish between a solution and a colloid.

10. Visual Concepts
Chapter 12
Colloids

11. Visual Concepts
Chapter 12
Emulsions

12. Properties of Solutions, Colloids, and Suspensions
Section 1 Types of Mixtures
Chapter 12
Properties of Solutions, Colloids, and Suspensions

13. Solutes: Electrolytes Versus Nonelectrolytes
Section 1 Types of Mixtures
Chapter 12
Solutes: Electrolytes Versus Nonelectrolytes
Electrolyte - substance that dissolves in water to give a solution that conducts electricity
Any soluble ionic compound, such as sodium chloride, NaCl, is an electrolyte.
Nonelectrolyte - substance that dissolves in water to give a solution that does not conduct electric current
Ex: sugar

14. Electrical Conductivity of Solutions
Section 1 Types of Mixtures
Chapter 12
Electrical Conductivity of Solutions