water

Question 1

covalent bond

Answer 1

a bond between 2 atoms formed by sharing electrons

Question 2

hydrogen bond

Answer 2

weak bond between water molecules

Question 3

electronegativity

Answer 3

measures how strongly the nucleus of an atom attracts shared electrons. influenced by number of protons (-) and orbital levels

Question 4

polar covalent bond

Answer 4

between O and H because O more electronegative resulting in uneven sharing of electrons

Question 5

capillary action

Answer 5

the process of water being pulled against gravity with adhesion and cohesion from the soil to the top of the plant

Question 6

properties of water

Answer 6

adhesion, cohesion, specific heat capacity, viscosity, buoyancy, thermal conductivity

Question 7

how is ringed seal adapted to arctic life

Answer 7

blubber (buoyancy and thermal conductivity), hydrodynamic shape (viscosity)

Question 8

characteristics of black throated loon

Answer 8

aero- and hydrodynamic shape (viscosity in air and buoyancy in water), oiled feathers insulate by trapping air (thermal conductivity)

Question 9

what is a sap

Answer 9

a watery fluid of dissolved substances that fills the central vacuole in plant cells

Question 10

how is oxygen transported in bloodstream

Answer 10

by the protein haemoglobin in red blood cells