a1.1 water sl

Water is made of

2 hydrogens and one oxygen atom

What is the bond that connects one water molecule to another

Hydrogen bonds

Cohesion

Water sticking to xylem walls

Benefit of cohesion to organisms

Surface tentsion:allows objects to float on water due to the hydrogen bonds that from cohesion

Transport of water under tension :water molecules sticking to eachother going against gravity to travel up xylem walls from root to leaves(continues water collum required)

Ahesion

Attraction between unlike polar molecules

What is capillary action

Water molecules sticking to xylem walls (rises through soil and sticks to innner wall)

solvent properties

Hydrogen bonds for shells around other polar molecules dissolving them and prevent them from re joining

Solvent properties \

Phloem carries disolved sugar from leaves into other parts of the Plant

In humans most metabolic reactions take place In aqueous solutions

Buoyancy

Viscosity is the ability to flow more viscous more resistance so its harder to flow

Benefit of buoyancy

Animals have a density closer to water so it makes it easier for them to float

Hydrogen bonds between water molecules create more viscosity sea water is more viscous than pure water so its harder for animals that live in the ocean

solvent ptoperties

Thermal conductivity

Water is a very good heat conductor

Water contect in blood allows it to carry heat from where its generated to where its needed

Benefit

Water carries heat out of animals in a body of water

Disatvantage they need adaptations

Specific heat capacity

How much energy u need to make a substance 1 degree higher

How is specific heat capacity a benefit to animals in water

Stable/constant temp water does not change as much