water

Question 1

what is the hydrogen bonding in water?

Answer 1

the attraction of positively charged hydrogen and negatively charged oxygen

Question 2

describe hydrogen bonding in water

Answer 2

oxygen and hydrogen have slight charges due to being polar. These charges are opposite and so they attract to form h20, between these water molecules, hydrogen bonds also form

Question 3

what are 3 main properties of water

Answer 3

1- solvent
2- high specific capacity
3- high latent heat of vaporization

Question 4

explain the necessary 2 of the 3 main properties of water and what it causes/leads to

Answer 4

1- high specific latent heat
: a lot of energy is require to raise 1kg of a substance by 1 degree Celsius due to this, water have a relatively constant temperature

2- high latent heat of vaporization
: as a result of the high specific heat capacity, to change state from liquid to gas a lot of energy is required

Question 5

explain the function of the solvent property of water

Answer 5

acts as a medium for transport in 
a) the blood 
b)the digestive system.
 - during break down, water is required to form back 
   the monomers by hydrolysis

Question 6

explain the function of the high specific capacity property of water

Answer 6

a lot of energy is require to change the temperature meaning bodily temperature is maintained to allow biochemical reactions in the body and no denaturing of enzymes due to changes in temperature
( remember the body is about 70% water)

Question 7

explain the function of the high latent heat of vaporization property of water

Answer 7

a lot of energy is require to change from liquid to water. This allows for cooling effect by sweating and evaporation. A lot of energy from the skin is used to change state of water allowing cooling effect