Quiz on Mixtures: Suspensions, Colloids, and Emulsions

What is a suspension?

• A mixture of two liquids that don't mix

• A mixture that is always clear

• A mixture with tiny particles that stay mixed

• A mixture with big chunks that settle

Which of the following is an example of a colloid?

• Milk

• Sand in water

• Oil and water

• Fruit chunks in a smoothie

What happens to the particles in a suspension over time?

• They dissolve completely

• They stay mixed forever

• They evaporate

• They settle to the bottom

What is an emulsion?

• A mixture of two liquids that stay mixed

• A mixture of solid and liquid

• A mixture of gases

• A mixture that separates quickly

Which of the following is NOT a characteristic of a colloid?

• Particles are not visible

• Particles stay evenly mixed

• Particles are small

• Particles settle out over time

What is a good way to remember the difference between suspensions and colloids?

• Suspensions have tiny particles, colloids have big chunks

• Colloids are made of solids, suspensions are made of liquids

• Suspensions have big chunks that settle, colloids have tiny particles that stay mixed

• Colloids are always clear, suspensions are always cloudy

Which of the following is an example of an emulsion?

• Ice cream

• Sugar water

• Salad dressing

• Fruit juice

What type of mixture is a smoothie with blended fruit that stays mixed?

• Solution

• Emulsion

• Colloid

• Suspension

What happens to the oil and vinegar in salad dressing?

• They separate immediately

• They mix and stay mixed

• They form a solid

• They evaporate

Which of the following describes a colloid?

• A solid dissolved in a liquid

• Two liquids that separate

• Small particles that stay mixed

• Large particles that settle