Science Coordinate 0654: C5. Electricity and chemistry Topical Past Paper Questions
Cambridge IGCSE Science Coordinate (0654) past-paper questions on C5. Electricity and chemistry, free. This topic is frequently examined across 23 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
A student investigates the reactivity of four different metals, A, B, C and D. The student adds a piece of each metal to an aqueous solution of each metal sulfate. (a) (i) State the observation that shows that a reaction takes place. Tick (✓) one box. (ii) Table 8.1 shows the stu…
Hydrogen-oxygen fuel cells use hydrogen and oxygen to produce electricity. (a) The reactions at the electrodes in a hydrogen-oxygen fuel cell are shown. anode: $ H_{2} \rightarrow 2H^{+} + 2e^{-} $ cathode: $ 4H^{+} + O_{2} + 4e^{-} \rightarrow 2H_{2}O $ (i) State the name of the…
Electrolysis can be used to break down a substance into useful products. Fig. 5.1 shows the electrolysis of dilute sulfuric acid. Fig. 5.1 (a) (i) Complete the labels on Fig. 5.1. Choose words from the list. anode anion cathode cation electrolyte (ii) State the name of gas X in F…
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