Types of Mixtures

Types of Mixtures

Multiple Choice

We classify all matter into...

• pure substances and mixtures

• homogeneous substances and heterogeneous substances

• homogeneous mixtures and heterogeneous mixtures

• pure mixtures and substances

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What do we call a mixture in which we can distinguish its components?

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What do we call a mixture in which we cannot distinguish its components?

Multiple Select

Which of these are homogeneous mixtures?

Multiple Select

Which of these are heterogeneous mixtures?

Solvent and Solute

• Imagine we mix salt with water. We obtain a homogeneous mixture with two components

• The solvent is the main component, water in this case.

• The solute is the secondary component, salt in this case.

• We can also have solid mixtures (for example inoxidable steel, which is a mixture of iron and a little bit of carbon) as well as gaseous mixtures (such as the air we breathe).

Multiple Choice

In the case of inoxidable steel (acer inoxidable), what would be the solvent and what would be the solute?

• Solvent: iron, solute: carbon

• Solvent: carbon, solute: iron

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Actually, water itself is a homogeneous mixture! What would be the solute in drinking water?

Colloids

In some homogeneous mixtures, if we use a microscope, we can distinguish the solute from the solvent. In the image to the right, we can see what mayonnaise looks like under a microscope.

These mixtures are called colloids.

The main component of a colloid is sometimes called dispersion medium. The secondary component is called dispersed phase.

Types of colloids

Here you can see the different types of colloids there are. They are classified according to the state (gas, liquid or solid) of both the dispersion medium and the dispersed phase.

Fill in the Blanks

What do we call the secondary component of a colloid?

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What do we call the main component of a colloid?

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