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I think water is a pure substance because water is made up of hydrogen and oxygen. Also, it is rarely found naturally in its pure form.

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I think water is a pure substance because it is natural and only has one type of molecule.(H20)

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I believe water is a pure substance because it is not mixed with anything but can be mixed if something is added to it. it is also made up of one molecule.

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I believe that water is a pure substance. I believe this because It starts in H20 and can be mixed well to become unpure

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I think that water is pure. I think this because it starts of natural in just H20 but then can be mixed to become unpure.

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I think that water is a pure substance. I think this because it is only made up of one molecule, which is H20. And also the oxygen in water is a pure substance as well. So I think water is pure.

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Water is a pure substance because it only consists of one molecule. If mixed with another substance, however, it can become un-pure.

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Yes, I think water is a pure substance, this is because even though it is two chemicals, it is one molecule

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I think that water is a pure substance, I think this because it only has one type of molecule.

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I think that wateris a pure substance because like we saw, Water is made up of oxygen which is also a purse substance which makes the water pure as well

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Water is a pure substance because its natural but it can also be unpure in some scenarios.

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The water that we drink and use for other things is pure. There is no substance mixed with it unlike other liquids. For example, orange juice is not a pure substance because many fluids and other substances are mixed together to create that mixture.

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Yes I think water is a pure substance because it is only made up of one molecule.

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Since water is made up of oxygen and hydrogen, I would consider it a pure substance. However, if water is contaminated (or if it were salt water), it would no longer be a pure substance because it would contain more than one compound.

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yes i think it is a pure substance because it is natural and people dont have to mix things in to make water

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I think that water can be pure but can also be un-pure. I think that if you take water from the ocean or the lake there would be other substances in the water which would make it un-pure. but if you were to filter the water (water bottles, fridge water) it would be at its purest form.

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Water is a pure substance, as it's only made of one type of molecule, H2O.