Composition of matter
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Composition of Matter. All matter is made up of atoms. Elements - when all the atoms in the matter are the same. There are 118 elements. Ex: Carbon and Oxygen. Compounds. Compounds - matter that is made up of 2 or more combined elements.

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Presentation Transcript

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All matter is made up of atoms.

Elements- when all the atoms in the matter are the same.

There are 118 elements.

Ex: Carbon and Oxygen


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Compounds

  • Compounds- matter that is made up of 2 or more combined elements.

  • Compounds look different than the elements that make them up.


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Compound Ex:

  • Ex: H & O = H2O

    C & O = CO2

    C,H & O = C6H12O6


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Substance

  • Substance- matter that is either an element or a compound.


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Mixture

  • Mixture- material that is made up of 2 or more substances that can be separated physically.


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2 Types of Mixtures

  • Heterogeneous

  • Homogeneous


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Heterogeneous Mixtures

  • Heterogeneous Mixture- mixture that is unevenly mixed.

  • You can see the stuff in the mixture.



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Homogeneous Mixture

  • Homogeneous Mixture- mixture that is evenly (uniformly) mixed.

  • Homogeneous Mixtures are also called solutions.



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Colloid

  • Colloid- a heterogeneous mixture that never settles.

  • Ex: milk or fog


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Suspension

  • Suspension- heterogeneous mixture that contains a liquid where visible particles settle.



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Tyndall Effect

  • Tyndall Effect- the scattering of light by particles in a mixture.




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