Science Combined 0653: C7. Chemical reactions Topical Past Paper Questions
Cambridge IGCSE Science Combined (0653) past-paper questions on C7. Chemical reactions, 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) Table 5.1 shows information about some bases. (i) Complete Table 5.1. Table 5.1 [2] (ii) Explain why some bases are not alkalis. [1] (b) (i) Bases react with acids. Complete the equation to show the general products formed when a base reacts with an acid. base + acid $ \right…
A student investigates the chemical reaction between aqueous barium nitrate and aqueous H. ## Procedure The student: step 1 assembles the apparatus and chemicals shown in Fig. 2.1 Fig. 2.1 step 2 records the mass of the flask and its contents step 3 turns the flask upside down to…
(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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