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Is water a pure substance?

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Quick Answer

Water is a pure substance. This is because it has the same material all over and is made of one kind of substance throughout. Moreover, water cannot be separated into other materials.

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Water is a compound that contains two different elements: hydrogen and oxygen. When salt is added into water, it becomes a mixture. Since it has the same features all throughout, it is called a homogeneous mixture or solution. This is in contrast with a heterogeneous mixture. Water can be physically segregated from salt via methods such as filtration. Water, which is colorless and odorless, has a freezing point of 32 degrees Fahrenheit and a boiling point of 212 degrees Fahrenheit.

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