4.9.4 Properties and Uses of Metals and Non-metals (Structured Questions)

Question 1:
Diagram 1.1 and Diagram 1.2 show an experiment to study the heat conductivity between metal and non-metal.

Table shows the time taken for the thumb-tack to fall after both rods are heated.

(a) State one hypothesis for this experiment. [1 mark]

(b) State the variables in this experiment.
  (i) Constant variable [1 mark]
  (ii) Manipulated variable [1 mark]

(c) Based on the Table, which rod is good heat conductor? [1 mark]

(d) Glass is a non-metal substances. Based on this experiment, state the operational definition for non-metal. [1 mark]

(a) Metals are better heat conductors than non-metals.

(b)(i) The distance between the thumb-tack and the flame, size of the flame

(b)(ii) Types of rod

(c) Copper rod

(d) Non-metal is defined operationally as a poor heat conductor.

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