water

properties of water

• cohesion and adhesion

• regulates temperature

• expansion when freezing

• solvent

• chemical reactions

• lubricates and protects

cohesion and adhesion

hydrogen bonds allow water molecules to stick together (cohesion) and stick to other surfaces (adhesion)

regulates temperature

hydrogen bonds give water a high heat capacity

slow to heat and cool

expansion when freezing

solid water is less dense then liquid water

ice floats on water

solvent

since water is polar, other polar molecules and ions dissolve easily in water because they can also form hydrogen bonds

chemical reactions

needed to break or form certain bonds

hydrolisis

dehydration synthesis

lubricates and protects

joints and brain

electronegativity

an atoms pulling power on electrons.

if pulling power within a molecule is unequal, it leads to polarity. if pulling power is equal, the molecule is nonpolar.

hydrogen bonds are weak

hydrogen bonds are weak because they are not permanent, they are just attracted to each others charges.