Mixtures Bamboozled Review

Use to practice. Remember to also study your notes, labs, and textbooks. Extra-help is available during snack & lunch recess by appointment

Types of Mixtures

Labeling Mixtures

1. Solution

   • Has a solute and a solvent
   • Has high solubility
   • Never exhibits a Tyndall effect

2. Suspension

   • Dust cloud
   • Muddy water
   • Sometimes exhibits a Tyndall effect

3. Colloid

   • Meringue
   • Milk
   • Always exhibits a Tyndall effect

Characteristics of Mixtures

Homogeneous Mixtures

• Consist of 2 or more substances
• Same phase throughout
• Uniform composition

Heterogeneous Mixtures

• Consist of 2 or more substances
• Different phases present
• Scatters light

Tyndall Effect in Suspensions

• Exhibits Tyndall effect when mixing, but not after particles settle.

Differences Between Suspensions and Colloids

• Colloid: Particles do not settle.
• Suspension: Particles settle, forming density layers.

Types of Colloids

Foam

• Colloid of a gas in a liquid or a solid.

Emulsion

• Colloid of a liquid in a liquid.

Gel

• Colloid of a liquid in a solid.

Aerosol

• Colloid of a liquid in a gas.

Sol

• Colloid of a solid in a liquid or a solid.

Elements vs. Compounds

Element

• Made of one pure substance
• Comprised of atoms

Compound

• Made of two or more pure substances
• Comprised of molecules

Identifying Types of Colloids

1. Emulsion: Mayonnaise, Egg
2. Gel: Gummy bears, Hair gel
3. Aerosol: Hairspray
4. Foam: Whipped cream, Popcorn
5. Sol: Marker ink, House paint