textbook questions & answers

Question 1

explain why a water molecule is polar

Question 2

explain why a hydrogen bond is weaker than a covalent bond

Question 3

what kind of molecule can catalyse hydrolysis reactions in living things

Question 4

2 nitrogen molecules form a triple covalent bond between to form an N2 molecule
explain how a triple bond is formed

Question 5

atoms form covalent bonds according to how many spaces they have in their outer shell of electrons
how many spaces do a) oxygen, b) nitrogen & c) carbon atoms have

Question 6

why is it important for water to be liquid over a broad range of temperatures

Question 7

why is water referred to as polar, and how does it’s polarity affect it’s solvent properties

Question 8

explain how water’s thermal properties enable living things to survive

Question 9

explain the difference in the molecular structure of liquid water & ice

Question 10

what is the difference between the latent heat of vaporisation & the specific heat capacity of water