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http://www.chem4kids.com/files/matter_mixture.html

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There are two important facts!

- All matter is made of extremely tiny particles.
- Each pure substance has its own kind of particle, different from the particles of other pure substances.

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Theory to Explain Mixtures and Pure Substances

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Theory to Explain Mixtures and Pure Substances

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This is the Particle theory of matter!

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This only has one kind of particle.

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A homogeneous material could be a pure substance as well.

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When you mix salt and sugar, it's a heterogeneous mixture.
Salt- Salt crystals have a shape that's like a cube.
Sugar- Sugar's shape will look different.

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This could be also known as a more commonly known word, a solution

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Milk is also interesting. It may look like it's homogeneous, but it actually is heterogeneous.

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When you can see the different parts of the material clearly.

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Every part of material is the same.

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It is made up of parts, or is mixed.

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Material with more than one set of property.

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Characteristics used to describe matter.

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Any material that occupies space and has a mass.