Chemistry: Suspensions, colloids and solutions

A suspension is a heterogenous mixture containing large particles that will settle on standing. Sand in water is an example of a suspension. A solution is a homogenous mixture of two or more substances where one substance has dissolved the other. An example of a solution is saltwater . Colloids are homogenous mixtures where the particles are small enough that they stay suspended. An example of this is gelatin, which stays suspended in water to form a gel.

Chemistry

Did you know that everything is made out of chemicals? Chemistry is the study of matter: its composition, properties, and reactivity. This material roughly covers a first-year high school or college course, and a good understanding of algebra is helpful.

Mixtures and solutions

The air you are (hopefully) breathing is a mixture of nitrogen and oxygen gases. We could also think of it as a solution of oxygen gas in nitrogen gas. In this section we will be learning about different types of mixtures, how to calculate concentration, and colligative properties.

Topic: Science

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