Acids, bases and salts — IGCSE Sciences - Co-Ordinated (0973) questions by topic
Acids, bases and salts questions test universal indicator and anhydrous copper sulfate observations on pure water, properties of potassium oxide and sulfur dioxide, the stages of crystallising copper sulfate, and pH change after treating acidic waste with limestone, worth from 1 to 12 marks.
Identify, describe and complete top the command words in this IGCSE Co-ordinated Sciences topic, with calculate and state also frequent: describe each stage of a crystallisation process in the correct order. 14 real questions from 2023 to 2025 papers make up this page. Submit each attempt for instant marking to check pH values and reaction stages are stated exactly as the mark scheme requires.
May–June 2025, Paper 11
Four liquids are tested with universal indicator and with anhydrous copper(II) sulfate. Which row shows the observations for pure water? universal indicator anhydrous copper(II)…
Answer this question and get it marked →May–June 2025, Paper 21
Which statement describes an amphoteric oxide? A It does not react with either sodium hydroxide or hydrochloric acid. B It reacts with sodium hydroxide but not hydrochloric acid.…
Answer this question and get it marked →May–June 2025, Paper 22
A student prepares an insoluble salt by neutralising an acid with an alkali. Which method is used to separate the salt from the reaction mixture? A chromatography B distillation C…
Answer this question and get it marked →May–June 2024, Paper 11
Salts are made when four substances react separately with dilute hydrochloric acid. 1 magnesium 2 magnesium carbonate 3 magnesium hydroxide 4 magnesium oxide Which substances…
Answer this question and get it marked →May–June 2024, Paper 12
The waste from a factory is acidic. The factory treats the waste with limestone. Which row shows the pH of the waste before and after treatment? A before 6, after 5 B before 6,…
Answer this question and get it marked →May–June 2024, Paper 22
Universal indicator solution is added to test-tubes W (dilute hydrochloric acid), X (aqueous sodium hydroxide) and Y (aqueous sodium chloride). [Diagram: three test-tubes W, X, Y…
Answer this question and get it marked →May–June 2023, Paper 11
Magnesium chloride is prepared by reacting an excess of insoluble magnesium oxide with dilute hydrochloric acid. Which processes are used to obtain pure crystals of magnesium…
Answer this question and get it marked →May–June 2023, Paper 12
Potassium oxide and sulfur dioxide are both soluble in water. Which row describes properties of these oxides? A oxide potassium oxide, pH 14, damp red litmus turns blue B oxide…
Answer this question and get it marked →Which element is used in the manufacture of sulfuric acid? A carbon B hydrogen C nitrogen D sulfur
Answer this question and get it marked →May–June 2023, Paper 21
Which statements about neutralisation are correct? 1 Acids and bases produce water when they neutralise each other. 2 During neutralisation, bases transfer protons to acids. 3…
Answer this question and get it marked →May–June 2023, Paper 22
Copper(II) sulfate is produced by reacting copper(II) oxide with dilute sulfuric acid. The stages in the process to produce pure dry crystals are listed. 1 Leave to crystallise in…
Answer this question and get it marked →October–November 2023, Paper 11
Four different oxides are listed. 1 calcium oxide 2 lithium oxide 3 nitrogen oxide 4 phosphorus oxide Which oxides are acidic oxides? A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4
Answer this question and get it marked →October–November 2023, Paper 31
A student investigates the reaction between magnesium and dilute sulfuric acid. During the reaction, hydrogen gas and a salt are made. Complete the word equation for this…
Answer this question and get it marked →October–November 2023, Paper 41
The pH of a solution describes how acidic or alkaline it is. State which of these values shows the pH of a strong acid. Tick one box: 14; 7; 5; 1.
Answer this question and get it marked →Other IGCSE Sciences - Co-Ordinated topics
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