water

Question 1

water

Answer 1

• water is polar
• can form h bonds

Question 2

why it is imp for life

Answer 2

good solvent ; can dissolve other polar molecules *
* Ice is less dense then water : allows aquatic life
* HIGH HEAT CAPACITY
* BIOLOGICAL REACTIONS TAKES PLACE IN WATER
* COHESION

Question 3

cohesion of water molecules

Answer 3

allows water to stick together

imp for water to move upwards in plants

Question 4

high heat capacity

Answer 4

makes water hard to heat up;* allow life to withstand changes in temp*

due to H bonds require more energy to brake

Question 5

properties of water

Answer 5

• specific heat capacity
• latent heat of vapourisation

Question 6

amount of heat required to raise a 1g substance temp by 1°C

Answer 6

SPECIFIC HEAT CAPACITY

relevant in terms of being able to withstand temp changes

water has high SHC

Question 7

latent heat of vapourisation

Answer 7

the amt of heat that must be transferred to liq state (at its bp) to turn it into gas

relevant in terms of sweating

we need it to cool down