water properties

how much water does our body consist of?

75%

what is water referred to as, and why does it get that title?

water is referred to as a universal solvent because it is a polar molecule, allowing it to attract other polar molecules and ions, dissolving most materials.

how is water structured?

water has 3 atoms: 1 oxygen atom, 2 hydrogen atoms (H2O)

through which type of bonding are the atoms of water held together?

convalent bonding

covalent bond

result of atoms sharing electrons

define polar molecule and explain why water is a polar molecule

a polar molecule is a molecule with two distinct ends: 1 partially positively charged and the other with a partially negative charge. water is a polar molecule because the elections are not being shared equally among the hydrogen and oxygen atoms

through which type of bond are water molecules held together?

hydrogen bonding

hydrogen bonding

bonding in which a slightly positive hydrogen atom in one molecule and a slightly negative hydrogen atom in another

cohesion

water molecules stick to other water molecules through hydrogen bonding

adhesion

water molecules stick to other polar molecules through hydrogen bonding

capillary action

eater's ability to creep up thin tubes through cohesion and adhesion (blood flow)

advantage of cohesion and adhesion

water is able to reach the leaves of tress through capillary action

surface tension

the ability of water molecules to attract each other and create a strong surface

high specific heat

water resists changes in temperature because the heat water absorbs is used to break down hydrogen bonds before it changes temperature

advantage of high specific heat

regulate ocean temperature, regulate internal temperature

high heat vaporization

water can absorb a lot of heat before it turns from liquid to gas because the heat absorbed is used to break down hydrogen bonds.

advantage of high heat vaporization

cools the body down through sweating

how does sweating cool down the body

by absorbing heat and water inside the body to be expelled as a gas (high heat vaporization)

list properties of water

1. universal solvent

2. cohesion and adhesion

3. high specific heat

4. high heat vaporization

5. ice is less dense than water