Chemistry 0620: REACTING MASSES AND CHEMICAL EQUATIONS Topical Past Paper Questions
Cambridge IGCSE Chemistry (0620) past-paper questions on REACTING MASSES AND CHEMICAL EQUATIONS, free. This topic is frequently examined across 26 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
This question is about oxides. **(a)** Aluminium oxide, $Al_2O_3$, is an amphoteric oxide. > **(i)** State the meaning of the term amphoteric. [1] > **(ii)** Aluminium oxide is used to make calcium aluminate. > > Calcium aluminate contains calcium ions, $Ca^{2+}$, and aluminate i…
Duralumin is an alloy containing a mixture of the metals aluminium, copper, magnesium and manganese only. Table 4.1 gives some information about the four metals in duralumin. Table 4.1 Plan an investigation to find the percentage by mass of aluminium in a sample of duralumin. You…
This question is about acids, bases and alkalis. Table 3.1 shows the pH values of some substances. Table 3.1 (a) Define the term base. [1] (b) State what is meant by the term alkali. [1] (c) Thymolphthalein is an indicator. State the colour of thymolphthalein in: • NaOH(aq) .....…
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