Page 50 - Ranger SPM 2022 - Science

Science SPM SPM Model Paper
PAPER 2
2 hours 30 minutes
Section A
[20 marks]
Penerbitan Pelangi Sdn Bhd. All Rights Reserved.
Answer all questions in this section.

1. Figure 1 shows an experiment to study (b) State one inference for this
the effect of different solutions on the experiment.
oxidation of a slice of an apple. [1 mark]
(c) State the manipulated variable in
this experiment.
[1 mark]
Sodium (d) Based on this experiment, state
Lemon bicarbonate
juice solution the operational definition for the
Beaker D Beaker E oxidation of food.
[1 mark]
Figure 1
After 1 minute, each slice of apple is (e) Lemon juice is a natural food
removed and set aside for 15 minutes. preservative. State another
Then, any change in the colour substance which can be used to
of the slices of apple is observed replace lemon juice.
and recorded. The results of the [1 mark]
experiment are shown in Table 1.
2. Figure 2.1 and Figure 2.2 show the
Table 1 apparatus set-up for an experiment to
study the hardness of a pure metal
Change in
Type of and its alloy.
solution colour of the
slice of apple
Metre
rule
Lemon juice No change
Thread
Sodium
bicarbonate The slice of apple Weight
turned brown
solution
Retort Steel ball
stand Cellophane
(a) State the hypothesis for this tape
experiment. Copper block
[1 mark]
Figure 2.1

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