CORE PRACTICAL - osmosis in food slices - SB1 Flashcards
1
Q
what apparatus is needed?
A
samples, test tubes, scales, paper towel, stop watch, solutions of different concentrations
2
Q
how long do you leave the samples for?
A
15 minutes
3
Q
what is the dependant variable?
A
percentage change in mass
4
Q
what is the independent variable?
A
the concentration of solution
5
Q
what are the control variables?
A
the initial mass of sample, amount of solution
6
Q
what does the experiment show?
A
shows how much water is absorbed/ lost depending on solution concentration
7
Q
what does a larger final mass indicate?
A
water was absorbed (if there is mass lost that means water was reduced)
8
Q
what should be seen from the experiment?
A
the lower the concentration, the more mass gained
