Understanding Mixtures: Heterogeneous and Homogeneous

What is an example of a heterogeneous mixture?

• Salt and water

• Iron filings and sand

• Sugar and water

• Milk

How can you separate iron filings from sand?

• Using a magnet

• Adding water

• Heating the mixture

• Freezing the mixture

What happens when you mix sand and water?

• They form a homogeneous mixture

• The sand dissolves

• The sand settles at the bottom

• They become inseparable

What is a heterogeneous mixture?

• A mixture where you can't see the different parts.

• A mixture where you can easily see the different parts.

• A mixture that is hard to separate.

• A mixture that is clear and wet.

Which of the following is an example of a homogeneous mixture?

• Salad

• Sand and iron filings

• Salt water

• Oil and water

What does it mean to evaporate?

• To change from a gas to a liquid.

• To change from a liquid to a gas.

• To change from a solid to a liquid.

• To change from a solid to a gas.

Tags

NGSS.MS-PS1-4

Which of the following is an example of a homogeneous mixture?

• A. Oil and water

• B. Sand and iron filings

• C. Salt and water mixed together so well that you can't see the salt.

• D. The salt and water are not mixed together.

Why is it difficult to separate the different parts of a homogeneous mixture?

What is a mixture?

• A single substance

• A combination of two or more substances

• A type of chemical reaction

• A solid material.

How can scientists separate mixtures?

• By using a magnet

• By heating them

• By using different methods like filtration and evaporation

• By freezing them.