examples of solutions suspensions and colloids grade 8

📚 Quick Study Guide

• 🔍 Solution: A homogeneous mixture where one substance (solute) dissolves completely into another (solvent). Particles are very small and not visible. Example: Sugar dissolved in water.
• 💧 Suspension: A heterogeneous mixture where particles are large and visible. These particles settle down over time. Example: Sand in water.
• 🌫️ Colloid: A mixture with particles larger than those in solutions but smaller than those in suspensions. They appear homogeneous but scatter light (Tyndall effect). Example: Milk.
• 💡 Tyndall Effect: The scattering of light by particles in a colloid or suspension. Solutions do not show this effect.
• 🧪 Particle Size: Solution < Colloid < Suspension
• 📝 Homogeneous vs. Heterogeneous: Homogeneous mixtures have uniform composition throughout, while heterogeneous mixtures do not.

🧪 Practice Quiz

1. Which of the following is an example of a solution?
   1. Muddy water
   2. Saltwater
   3. Milk
   4. Orange juice with pulp
2. What type of mixture is milk?
   1. Solution
   2. Suspension
   3. Colloid
   4. Pure substance
3. Which mixture will exhibit the Tyndall effect?
   1. Sugar water
   2. Vinegar
   3. Starch solution
   4. Air
4. In a suspension, what happens to the particles over time?
   1. They dissolve completely
   2. They remain evenly distributed
   3. They settle down
   4. They become smaller
5. Which of the following has the largest particle size?
   1. Solution
   2. Colloid
   3. Suspension
   4. All have the same particle size
6. Which of the following is a homogeneous mixture?
   1. Sand and water
   2. Oil and water
   3. Air
   4. Flour and water
7. Which of the following is an example of a suspension?
   1. Coffee
   2. Blood
   3. Lemonade
   4. Vinegar