Cambridge Past Paper Questions

Nitrogen molecules, N₂(g), contain two atoms attracted to each other by a triple covalent bond.

Liquids that contain molecules of T smell like lemons. [Figure 3.1]

Compound V is a liquid. V contains 77.2% carbon, 11.4% hydrogen and 11.4% oxygen by mass. V has a relative molecular mass of 280.

Radium, Ra, is an element found in Group 2 of the Periodic Table. It is a crystalline solid at room temperature and conducts electricity. Radium ch...

0.025 mol of HI(g) is added to a closed vessel and left to reach dynamic equilibrium. The total pressure of the vessel is 100 kPa. equation 1 2HI(g...

Bromine reacts with butane in the presence of ultraviolet light to form bromobutane. Two structural isomers with the molecular formula C₄H₉Br are p...

Fig. 5.1 shows three reactions of 2-bromopropane, CH3CH(Br)CH3. CH3CH(Br)CH3 reaction 1 / \ reaction 2 CH3CH(OH)CH3 CH3CH(NH2)...

Z is a molecule which contains the elements carbon, hydrogen and oxygen only. Z contains only alkene and carboxyl functional groups.

1 (a) Define first ionisation energy. (b) Successive ionisation energies for element A are shown in Table 1.1. Table 1.1 jonisation | 1st | 2...

2 (a) Period 3 elements and their compounds show trends in their physical properties. (i) On Fig. 2.1 sketch a graph to show the melting points of ...

3 G belongs to a group of compounds called ethers. [Figure 3.1] (a) When G, C4H10O, is heated, thermal decomposition occurs. C4H10O(g) → C₂H₄(g) + ...

4 (a) 2-methylpropene reacts with HCl(g) at room temperature. The major organic product is 2-chloro-2-methylpropane. (i) Complete Fig. 4.1 to show ...

5 (a) But-2-ene reacts with KMnO₄ to form organic product, Y. Y does not react with Na2CO3. A gas is produced when an excess of Na is added to Y. (...

In this experiment you will identify a magnesium compound by thermal decomposition. When heated this compound decomposes to give magnesium oxide. F...

A bottle containing the acid salt sodium hydrogen sulfate, NaHSO4, has been contaminated. You will determine the percentage purity by mass of the s...

In Question 1 you carried out a neutralisation reaction involving sodium hydroxide. H+(aq) + OH-(aq) → H₂O(I) In Question 2 you are to determine th...

FB 6 is the solid impurity found in the bottle of solid used to prepare FB 2. It is a compound of a Group 1 metal and does not contain sulfur. The ...

2 In this experiment you will identify the metal, M, in a metal carbonate, MCO3, by thermal decomposition. MCO3(s) → MO(s) + CO2(g) FA 4 is the met...

Manganese(IV) oxide, MnO2, acts as a heterogeneous catalyst in the decomposition of hydrogen peroxide, H2O2.

The rate of reaction between 2-chloro-2-methylpropane, (CH3)3CCl, and methanol is investigated. When a large excess of methanol is used, the overal...

The ligand bipyridine consists of two pyridine rings. Pyridine, C₅H₅N, and benzene, C₆H₆, have similar planar, cyclic structures.

The condensation polymers, polyanhydride and polyester, are formed by similar methods. The repeat unit for a polyanhydride is shown in Fig. 5.2. [F...

Asparagine is an amino acid that contains a chiral carbon atom and displays stereoisomerism. Separate samples of asparagine are dissolved in CDCl₃ ...

Procaine is used as an anaesthetic in medicine. It can be synthesised from methylbenzene in five steps as shown in Fig. 7.1. [Figure 7.1 showing sy...

Calcium carbonate decomposes on heating. CaCO3(s) → CaO(s) + CO2(g) Table 4.1 shows the values of the Gibbs free energy change, AG°, for this react...

The reagent and conditions required for the nitration of benzene, benzoic acid and phenol are shown in Table 6.1. [Figure Table 6.1] Concentrated H...

The structure of cyclohexylamine is shown in Fig. 9.1. [Figure cyclohexylamine, Fig. 9.1]

Answer all the questions in the spaces provided. (d) (i) The equation for the formation of a gaseous sulfate ion is shown. S(s) + 2O2(g) + 2e¯ → S...

(e) Aqueous manganese(II) ions show similar chemical properties to aqueous copper(II) ions when reacted separately with NaOH(aq) and with concentra...

The rate of reaction between 2-chloro-2-methylpropane, (CH₃)₃CCl, and methanol is investigated. When a large excess of methanol is used, the overal...

(d) The ligand bipyridine consists of two pyridine rings. Pyridine, C₅H₅N, and benzene, C₆H₆, have similar planar, cyclic structures. [Figure 4.2]...

(e) Acyl chlorides react with sodium carboxylates to form acid anhydrides as shown in Fig. 5.1. [Figure 5.1] The condensation polymers, polyanhyd...

A student plans an investigation to find the molar ratio of the reaction between sodium chloride, NaCl, and a lead compound. The student is provide...

A student plans to study the rate of hydrolysis of 2-bromo-2-methylpropane. [Diagram showing reaction] As the concentration of 2-bromo-2-methylprop...

A student plans an experiment to find a value for the molar volume, Vm, of hydrogen gas at room conditions. Hydrogen gas is formed when magnesium r...

In a neutral solution, aqueous potassium iodide acts as a catalyst for the decomposition of aqueous hydrogen peroxide. 2H2O2(aq) → 2H2O(l) + O2(g) ...

A student plans to study the rate of hydrolysis of 2-bromo-2-methylpropane. [Chemical reaction diagram with structures] As the concentration of 2-b...

When chlorine gas is analysed in a mass spectrometer 35Cl+ ions are detected. Which row is correct?

Which species is a free radical?

If 1 mole of hexane combusts in an excess of oxygen, how many moles of products are formed?

Separate samples, each of mass 1.0 g, of the compounds listed are treated with an excess of dilute acid. Which compound releases the largest amount...

Which statement about the Cl–N=O molecule is correct?

Which row is correct?