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Mixtures. How do you make hot chocolate? Read and think. One, read and answer. A, what is a pure

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substance? B, what is a mixture? C, what is filtration? D, what is a homogeneous mixture?

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A pure substance consists of only one component. For example, silver, water, salt, and wood are

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pure substances. A mixture happens when we put two or more substances together. For example,

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we can mix a yogurt with sugar. There are two types of mixtures, heterogeneous mixtures and

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homogeneous mixtures. Heterogeneous mixtures. In a heterogeneous mixture, we put two or more

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substances together, but we can still see them separately. The whole mixture looks different.

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For example, when we make fruit salad, we can make a heterogeneous mixture. We can still see the

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different fruit separately. Homogeneous mixtures. In a homogeneous mixture, we put two substances or

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more together, but we can't see each of them separately. The whole mixture looks the same.

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For example, when we put sugar and orange juice and stir, we make a homogeneous mixture. We can't

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see the sugar and the orange juice separately anymore. It just all blends. Separating mixtures.

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There are different ways of separating mixtures. Two common methods are evaporation and filtration.

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Evaporation separates homogeneous mixtures, for example, salt and water. Leave the mixture in a

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shallow dish. So that means a dish that is not very deep. So let's say this was the dish,

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It's not very deep. It's shallow.

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So we put the mixture in, the water evaporates, and the salt stays in the dish, right?

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So the salt reappears separately.

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Filtration. Filtration separates heterogeneous mixtures.

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For example, sand and water.

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Pour the mixture into a filter.

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The water passes through the filter.

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The sand stays in the filter, right?

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because the sand doesn't dissolve into the water.