Is pure water is pure substance?

Answer 1

It's a molecule than cannot be separated in to to constituent elements by physical means.

Answer 2

yes,

water, sugar, gold, ect are all pure substances

Answer 3

chemically spoken, water is dihydrogenoxide, H2O. This is a single-component substance, and thus, "pure".

Naturally spoken, water never is pure. There is always a certain amount of salts and gasses dissolved in it, so it never reaches a 100% purity.Even if water is distilled & deionised it cannot be made "pure" in the sense of a single substance. It will ALWAYS be a mixture (99.99999% water, 0.00001% hydronium ions, 0.00001% hydroxide ions - figures approximately correct for 25 celcius - the % of water drops at higher temperatures with a corresponding increase in the latter two figures - research something called "Ionic Product of Water"). Water effectively "reacts with itself" and you can't stop it!!

Answer 4

No, it is not a pure substance. It is a mixture of salt and water.

Answer 5

yes,

water, sugar, gold, ect are all pure substances

Answer 6

Yes. Pure distilled water is a pure substance. Tap water will have many different substances dissolved in the water which is why chemists use distilled water when doing experiments.

Answer 7

Yes, pure water is considered a pure substance because it is made up of only one type of molecule, which is H2O. This means that it has a uniform and consistent composition throughout.

Answer 8

no water is not a pure substance because