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Mixture, because it is mixed with all sorts of chemicals, such as smog, and or pollen.

Mixture is NOT a pure substance, because to be a pure substance, it can't be mixed with anything.

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9y ago

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More answers

Oxygen is a pure element. The gas form (O2) is also pure because it only contains one element even though it is two atoms.

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14y ago
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pure substance
Oxygen is an element (pure), O2, NOT a mixture, even not a compound.

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11y ago
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Oxygen is a pure substance. In nature, free oxygen exists as a molecule of two oxygen atoms covalently bonded, O2.

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12y ago
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Household hydrogen peroxide is a homogeneous mixture of hydrogen peroxide and water.

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7y ago
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Oxygen is a pure substance.

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14y ago
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Pure substance.

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11y ago
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Oxygen is an element.

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7y ago
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Hydrogen peroxide is a pure substance.

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7y ago
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Q: Is hydrogen peroxide a pure substance or a mixture?
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