No, it is a compound of two molecules of hydrogene and 1 of oxygene. Thus giving you H2O
Water is the single most abundant chemical substance in the body, making up about 60% of an adult's total body weight.
No, sweetened water is not a pure substance because it is a mixture of water and sugar or other sweeteners. A pure substance is a single type of matter with a specific composition and properties.
water
a pure substance! ;)
Water
water
homogeneous mixture
Iced water is not considered a pure substance; it is a mixture. While the water itself (H2O) is a pure substance when in its liquid or solid form, iced water contains ice (solid water) and liquid water, which coexist at 0 degrees Celsius. The presence of ice and liquid water together creates a heterogeneous mixture rather than a single pure substance.
A single substance has one phase.
Water would be the most abundant substance but if you're asking about elements then oxygen would make up the greatest percentage of body mass.
A mechanism is a process, and you can't apply the word to a single substance. Obviously there are quite a few biochemical mechanisms which involve water.
Mixture. A compound is a single substance consisting of atoms bound together (for a very simple definition): water (H2O), Ammonia, etc. A mixture is a combination of coumpounds/elements that are physically, not chemicall combined. When you dissolve sugar in water, you have a sugar-water mixture, not a compound since you do not obtain a single substance "sugar-water" with a unique chemical formula.