Science Combined 0653: C5. Electricity and chemistry Topical Past Paper Questions
Cambridge IGCSE Science Combined (0653) past-paper questions on C5. Electricity and chemistry, free. This topic is frequently examined across 26 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
(a) Figure 4.1 shows apparatus used for the electrolysis of molten magnesium chloride. Figure 4.1 (i) Suggest two properties of graphite that make it suitable for use as an electrode. 1 .....2 (ii) For electrolysis to take place, the magnesium chloride must be molten. Predict the…
(a) Fig. 5.1 shows the electrolysis of molten zinc chloride, $ ZnCl_{2} $, using inert electrodes. Fig. 5.1 (i) The switch is closed. Describe the observation at the positive electrode. (ii) Write the ionic equation for the formation of zinc. Include state symbols in your equatio…
(a) Fig. 5.1 shows the electrolysis of molten zinc chloride using inert electrodes. Fig. 5.1 (i) Explain why the zinc chloride must be molten in this electrolysis. [1] (ii) Suggest why the electrodes are inert. [1] (iii) Describe what happens at the negative electrode in terms of…
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