Classification of Matter Video Lessons

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Problem: Is carbon dioxide gas a pure substance? Explain.

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Recall that matter is also classified according to its composition:

  • A pure substance is made up of only one component, and its composition is constant, it does not change from one sample to another.
    • It could either be an element or a compound.

▪ Element cannot be separated into simpler substances or composed of only 1 type of atom (eg. O3, Cl2)

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Is carbon dioxide gas a pure substance? Explain.

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