B2 H - Sample set 1 Q3 Answers
3) A gardener investigated the ability of four types of compost to hold water.
50cm3 of water was added to each type of compost.
Figure 6 shows the volume of water retained by four different types of compost.
50cm3 of water was added to each type of compost.
Figure 6 shows the volume of water retained by four different types of compost.
(a) (i) Calculate the percentage change in mass for compost B.
(2)
..............................................................%
(ii) Explain which compost would be best to use for a pot containing
strawberry plants to be grown during a hot summer.
(2)
(iii) State one way to improve this investigation in order to compare the results without having to calculate the percentage change in mass. (1)
(b) One method of preserving strawberries is by using them to make jam.
Figure 7 shows a method for making strawberry jam.
(iii) State one way to improve this investigation in order to compare the results without having to calculate the percentage change in mass. (1)
(b) One method of preserving strawberries is by using them to make jam.
Figure 7 shows a method for making strawberry jam.
(i) Explain why reducing the water content of the strawberries will help to
preserve them.
(2)
(ii) Give a reason for sterilising the jars before adding the jam. (1)
(Total for Question 3 = 8 marks)
(ii) Give a reason for sterilising the jars before adding the jam. (1)
(Total for Question 3 = 8 marks)