water

Question 1

cohesion

Answer 1

water molecules “sticking” together by hydrogen bonds

surface tension to water

protects organisms that pond scape and live on top of water

Question 2

why is water a solvent?

Answer 2

many substances can dissolve in it

positive hydrogen attracts negative ions

negative oxygen attracts positive ions

Question 3

hydrophilic

Answer 3

can dissolve polar molecules

Question 4

hydrophobic

Answer 4

can’t dissolve non polar molecules

Question 5

metabolite

Answer 5

involved in many reactions

eg: photosynthesis
hydrolysis
condensation

Question 6

features of water

Answer 6

dipolar

charges are unevenly distributed

oxygen is slightly negative

hydrogen is slightly positive

Question 7

large latent heat of vaporisation

Answer 7

a lot of energy needed to convert water from liquid to gas

hydrogen bonds need to be broken

cooling effect eg: swearing (removing water)

plants use transpiration

Question 8

high heat capacity

Answer 8

a lot of energy is required to raise the rmp of water

hydrogen bonds need to be broken

temperature stays relatively the same

enzymes don’t denature