AS biology- Properties of water!!

1

Please help with these questions on the properties of water!!!

1) what property of water allows it to be liquid at room temp. when others with a similar mass are gases?
2)What properties of water allow it to be used as a temperature buffer for living things in 'higher than normal' temperatures?
3) what part does the ionisation of water play when an ionic substance such as sodium chloride dissolves?

thanks xxx

Reply 1

Stranded

11

xxpinkaxx

Please help with these questions on the properties of water!!!

1) what property of water allows it to be liquid at room temp. when others with a similar mass are gases?
2)What properties of water allow it to be used as a temperature buffer for living things in 'higher than normal' temperatures?
3) what part does the ionisation of water play when an ionic substance such as sodium chloride dissolves?

thanks xxx

Hi,
U asked for help, here u go :smile:

[1] Water's high latent heat of vapourisation
[2] Water's high latent heat of vaporization..cud also be latent heat of fusion
[3] Water's ionisation help polar substances as NaCL to dissolve in water...NACL dissociates forming Na⁺ & Cl^-...Na+ is attracted to the O- of a water molecule & Cl- is attracted to the H+ of H20...
Hence the aggregate salt (Nacl) dissloves.

Hope this helps..

Reply 2

Flame

You could mention high specific heat capacity(1,2) and all those hydrogen bonds present in water(1,2,3)

Reply 3

Da Mouse

3

Water has hydrogen bonds which require a large amount of heat to overcome the forces of attraction which gives water a high latent heat of vapourisation. Water is a polar molecule and as hira89 said, NaCl dissociates.

Reply 4

Just Grow up

xxpinkaxx

Please help with these questions on the properties of water!!!

1) what property of water allows it to be liquid at room temp. when others with a similar mass are gases?
2)What properties of water allow it to be used as a temperature buffer for living things in 'higher than normal' temperatures?
3) what part does the ionisation of water play when an ionic substance such as sodium chloride dissolves?

thanks xxx

Liquid at normal temperature
hydrogen bonding between water molecules
molecules more difficult to separate
ice float on water, freezes from the top
insulates water beneath
large body of water do not freeze completely
solvent for polar and ionic substances
solubility of gases in the environment
allow reactions to take place
transport medium for gametes or blood cells
water slow to change temperature
Large volumes provide thermally stable environment
Internal body temperature change minimized
Use for cooling e.g. sweating
large amount of water must be removed for water to freeze
organisms can use surface of water as habitat
can form large unbroken columns of water
reactant in photosynthesis
role in hydrolysis and condensation reaction

I think this is all you need to know about water

AS biology- Properties of water!!

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