A1.1 Water

Question 1

name of the bond between water molecules

Answer 1

hydrogen bond

Question 2

partial charge of the ions in water

Answer 2

hydrogen is positive. oxygen is negative

Question 3

cohesion

Answer 3

water molecules bonded together through hydrogen bonds

Question 4

adhesion

Answer 4

attraction between water molecules and other things

Question 5

capillary action

Answer 5

ability of a liquid to move through narrow tubes through cohesion and adhesion

Question 6

hydrophilic

Answer 6

attracted to water (polar)

Question 7

hydrophobic

Answer 7

repelled by water (non-polar)

Question 8

buoyancy

Answer 8

counteracts gravity, less dense things than water float and more dense things sink

Question 9

viscosity

Answer 9

resistance to flow and how much energy is needed to change the shape of a liquid

Question 10

thermal conductivity

Answer 10

the ability to transfer heat when there is a temp diff

Question 11

specific heat capacity

Answer 11

how much water is needed to raise the temp of a substance

Question 12

ringed seal

Answer 12

buoyancy: low-density blubber makes them float
viscosity: streamlined shape to reduce drag
thermal conductivity: insulating blubber
specific heat capacity: seal pups survive in lairs insulated by air

Question 13

black-throated loon

Answer 13

buoyancy: large wings to generate lift
viscosity: hydrodynamic to reduce drag in water and aerodynamic to reduce drag in air
thermal conductivity: oiled feathers exclude water and down feathers trap air

Question 14

origin of water

Answer 14

many asteroids landing on earth

Question 15

why did water stay on the earth?

Answer 15

gravity

Question 16

goldilocks zone

Answer 16

distance from a star that will result in liquid water