properties of water

Water molecule

A polar molecule made of 1 oxygen and 2 hydrogen atoms.

Polarity

Having positively & negatively charged areas because of an uneven distribution of electrons.

Negative pole

Area with more electrons

Positive pole

Area with fewer electrons

Hydrogen bond

A weak bond formed between polar water molecules.

Cohesion of water molecules is high

because H-bonds make water molecules attract each other more strongly. It causes surface tension.

liquid water density is higher than ice (why ice floats on water)

because extra hydrogen bonds cause cold water molecules to move apart slightly

Water has high specific heat capacity

because some heat is used to break H-bonds so more is needed to raise the temperature.

Water is an excellent solvent

because polar water molecules dissolve so many substances.

Water has dipolarity

because water molecule contains both positve and negative charges.

Water is a good coolant in sweat

because it has a high specific heat.

Water is good for transport

because it can easily dissolve glucose

Water has a memory of molecules dissolved in it.

This claim is considered pseudoscience - there is no way to test the claims using the scientific method. (ToK)