Solutions, Colloids, and Suspensions

What is a solution?

• A type of gas

• A type of solid

• A homogeneous mixture of two or more substances

• A type of problem

Give an example of a solution.

• Sand mixed with water

• Iron filings in vinegar

• Salt dissolved in water

• Sugar dissolved in oil

What is a colloid?

• A mixture in which one substance is evenly dispersed in another substance, but not dissolved.

• A type of chemical reaction

• A type of gas

• A type of rock formation

Provide an example of a colloid.

• Orange juice

• Concrete

• Steel

• Milk

What is a suspension?

• A type of dessert made with gelatin

• A method of hanging something from a support so that it can move freely

• A heterogeneous mixture in which solute particles do not dissolve but remain suspended throughout the solvent.

• A type of punishment for students in school

Can you give an example of a suspension?

• Clear water

• Solid rock

• Dry sand

• Muddy water

What are the distinguishing characteristics of a solution?

• Colloidal mixture, small particles, no settling

• Heterogeneous mixture, large particles, settling

• Pure substance, large particles, no settling

• Homogeneous mixture, small particles, no settling

How are colloids different from solutions?

• Colloids have smaller particles that do not settle out, while solutions have larger particles that do not scatter light.

• Colloids and solutions are the same and can be used interchangeably.

• Colloids have larger particles that do not settle out, while solutions have smaller particles that do not scatter light.

• Colloids have smaller particles that settle out, while solutions have larger particles that scatter light.

What are the properties of suspensions?

• Heterogeneous mixtures with large particles that settle out over time

• Heterogeneous mixtures with small particles that remain suspended indefinitely

• Homogeneous mixtures with small particles that settle out over time

• Homogeneous mixtures with large particles that remain suspended indefinitely

Explain the Tyndall effect and its relevance to colloids.

• The Tyndall effect is the scattering of light by colloidal particles, making the beam of light visible. It is relevant to colloids because it helps in distinguishing between a true solution and a colloid.

• The Tyndall effect is the absorption of light by colloidal particles, making the beam of light invisible. It is relevant to colloids because it helps in distinguishing between a true solution and a suspension.

• The Tyndall effect is the refraction of light by colloidal particles, making the beam of light visible. It is relevant to colloids because it helps in distinguishing between a suspension and a true solution.

• The Tyndall effect is the reflection of light by colloidal particles, making the beam of light visible. It is relevant to colloids because it helps in distinguishing between a suspension and a true solution.

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