required practical 3

Question 1

independant varriable

Answer 1

concentration of the sucrose solution

Question 2

dependant varriable

Answer 2

mass of the potato after , measured using a mass

Question 3

control varriable

Answer 3

size of the potato
temperature in the water bath

Question 4

how is the control varriable controlled

Answer 4

measure potato slice with a ruler
use thermometer in the water bath

Question 5

what effect would the control varriables have on the dependant varriable

Answer 5

higher temperature increases kinetic energy so the rate of osmosis increases
larger potato slices will have a larger surface area to volume ratio so more osmosis

Question 6

errors

Answer 6

water bath isnt the correct temperature
not blotting the potato with paper

Question 7

limitations

Answer 7

water bath may not have an accurate temperature

Question 8

how could experiment be improved

Answer 8

use thermostatic water bath
use pH buffer

Question 9

what is RP3

Answer 9

water potential of poatato tissues in different concentrations of solutions