B1 osmosis in cells practical Flashcards
give one reason why it is important to dry the samples of carrot cores before they are weighed
when repeating this experiment using different concentrations of sugar solution, a student found that one sample did not change mass. suggest what this tells you about the concentration of the solution. assume no error in the experiment
two students set up this experiment. student a said that each sample of carrot must have the same starting mass. student b argued that each sample must have the same length and width. explain which student is correct.
a sample of carrot was placed into a 0.75mol/dm(cubed) sugar solution for 30 mins. the mass of the carrot was recorded before and after this.
initial mass:6.02g
final mass:3.91g
1. determine the percentage change
2.explain why this experiment should be repeated and give the other variable that can be controlled.
