Question 4:
Diagram 3 shows an experiment to study the resistance towards corrosion of an alloy and a pure metal.
Diagram 3
Table 3 shows the condition of both spoons after three days.
Table 3
(a) Based on the observation in Diagram 3, complete Table 3. [1 mark]
(b) State one hypothesis for this experiment. [1 mark]
(c) What is the responding variable in this experiment? [1 mark]
(d) The following list is examples of substances.
Classify the substances into alloy and pure metal in Table 4. [2 marks]
Table 4
Answer:
(a) No change
(b) A steel spoon does not rust easily as compared to an iron spoon.
(c) Rusting of spoon
(d)
Diagram 3 shows an experiment to study the resistance towards corrosion of an alloy and a pure metal.
Diagram 3Table 3 shows the condition of both spoons after three days.
Table 3(a) Based on the observation in Diagram 3, complete Table 3. [1 mark]
(b) State one hypothesis for this experiment. [1 mark]
(c) What is the responding variable in this experiment? [1 mark]
(d) The following list is examples of substances.
Classify the substances into alloy and pure metal in Table 4. [2 marks]
Table 4Answer:
(a) No change
(b) A steel spoon does not rust easily as compared to an iron spoon.
(c) Rusting of spoon
(d)