Write the letters A, B, C and D in the table to show which chip was in each solution. [2 marks] 3 (a) The table below shows data from an investigation into the effect of different salt concentrations on cells. Pieces of potato are weighed and placed in five different salt concentrations. After 20 minutes, they are removed and re-weighed. Calculate the percentage change for the piece of potato placed in the 0.2 M salt solution and complete the table. Give your answer to two decimal places. [2 marks] (b) Why is it better to calculate the percentage change rather than using the difference in mass as measure of the change in the potato chips? [2 marks]
Write the letters A, B, C and D in the table to show which chip was in each solution. [2 marks] 3 (a) The table below shows data from an investigation into the effect of different salt concentrations on cells. Pieces of potato are weighed and placed in five different salt concentrations. After 20 minutes, they are removed and re-weighed. Calculate the percentage change for the piece of potato placed in the 0.2 M salt solution and complete the table. Give your answer to two decimal places. [2 marks] (b) Why is it better to calculate the percentage change rather than using the difference in mass as measure of the change in the potato chips? [2 marks]
338623-pag-activity-biology-transport-in-and-out-of-cells-suggestion-1.docx