Water is pure substance because it is two elements chemically combined, rather than just mixed.
No. Water is a pure substance.
For a substance to be pure, it must have no impurities in the substance. Carbonated water is water with carbon dioxide and other substances dissolved in this. Hence, it is not a pure substance.
Ice is solid H2O so it is a pure substance, at least ideally.
Normal tap water can be considered as fairly pure and homogeneous; only ultrapure water is correctly pure. Sometimes tap water may contain insoluble impurities.
Water is pure substance because it is two elements chemically combined, rather than just mixed.
Carbonic acid is not considered a pure substance because it is a weak acid that can dissociate into carbon dioxide and water. As such, it is a solution rather than a pure substance.
24k Gold is a pure substance. Because it is made up of just gold unlike 14k gold which is silver and gold mixed.
A hydrate is considered a pure substance because it contains a specific ratio of water molecules to other molecules within its crystal structure.
Distilled water is a pure substance. H2O, nothing more.
Water is considered a pure chemical substance. Its mass and properties are similar to many of the other constituent elements.
Water is considered a pure substance because it is a compound made up of one type of molecule, H2O. It has a fixed chemical composition and consistent properties throughout. It does not contain any impurities or other substances mixed within it.
Water vapor is considered a pure substance because it is composed of molecules of only one type of substance, which is water.