Cambridge & Pearson Edexcel Past Paper Questions

An acid reacts with an alcohol to form an ester and water. CH₃CH₂COOH + CH₃CH₂OH → CH₃CH₂C(=O)O-CH₂CH₃ + H₂O What is the name of the ester formed i...

Part of a polymer chain is shown. Which monomer was used to produce this polymer?

The diagrams show three stages, 1, 2 and 3, used in the preparation of a salt. Which row correctly shows the solubilities both of the reactants and...

The nucleon number of an atom is typically greater than its proton number. The difference between these two numbers indicates the number of .....1....

Which is a pure compound?

Which diagram best represents the structure of a solid metal?

Hydrogen sulfide burns in an excess of oxygen according to the equation shown. 2H2S(g) + 3O2(g) → 2H2O(g) + 2SO2(g) 48 dm³ of hydrogen sulfide is b...

Which statement about electrical conductivity is correct?

Ammonia is manufactured from nitrogen and hydrogen by the Haber process. N2(g) + 3H2(g) ⇌ 2NH3(g) What is the percentage yield when 60 kg of ammoni...

The diagram shows the apparatus for an electrolysis experiment. Using the apparatus shown, which electrolyte would give colourless gases at both el...

Which metal is most likely to be extracted from its molten chloride by the use of electrolysis?

Two energy profile diagrams are shown. The scale on the y-axis is the same for both diagrams. Which statement is correct?

Ammonium nitrate dissolves in water. NH4NO3(s) H2O → NH4NO3(aq) ΔH = +25 kJ/mol Which statements are correct? 1 The reaction is endothermic. 2 The ...

Which statement about photosynthesis is correct?

Catalysts alter the rate of chemical reactions. Which statements correctly describe the effect of adding a catalyst to a reaction? 1 All reactant p...

Solution T has the following properties. 1 It reacts with magnesium forming a gas. 2 It reacts with calcium carbonate forming a gas. Which statemen...

Which substance is soluble in water?

Part of the Periodic Table is shown with four elements, W, X, Y and Z. These are not the elements’ actual symbols. Some pairs of these elements may...

The elements in Group I have similar chemical properties. Which statement explains why this is true?

Helium and xenon are both noble gases. What is true of both elements?

The ions of metal X react with aqueous potassium iodide. 2X2+(aq) + 4I-(aq) → 2XI(s) + I2(aq) coloured From this information, it can be deduced tha...

Which substance is a metal?

Which metal can be obtained from its oxide by using either carbon or hydrogen?

Iron is extracted from its ore in a blast furnace. Coke and limestone are also added to the blast furnace. What is the purpose of the limestone?

Aluminium is extracted from aluminium oxide by electrolysis. Which statement about this electrolysis is correct?

Steel is produced by blowing oxygen into impure molten iron. A student suggests two reasons why this process is carried out. 1 The oxygen removes s...

Z is a pollutant gas that is formed in internal combustion engines. An aqueous solution of Z is acidic. Z is removed from the exhaust gases in a ca...

A student investigates the properties of a colourless organic liquid. Which observation shows that the liquid is unsaturated?

When butene reacts with bromine, which compound could be made?

Which statement about propene is correct?

Which term describes the structure of Terylene?

Which process is involved in the formation of ethanol from ethene?

Which compound is an alcohol?

Which two compounds react together to form CH3CH2COOCH3?

Which compound might be suitable to flavour a soft drink?

The diagram shows part of the Periodic Table. Mg V Fe B C Al Si P Cu Zn Answer the questions using only the elements shown in the diagram. E...

Sodium is a metal. State two physical properties of sodium which are different from most other metals.

Water can be removed from aqueous copper(II) sulfate by distillation.

This question is about compounds containing chlorine.

The table shows some properties of four Group VII elements. element melting point in °C boiling point in °C density of liquid at boiling point in ...

Ethanoic acid, CH3COOH, is a weak acid.

Hydrogen can be produced when steam and carbon monoxide are passed over a catalyst. H2O(g) + CO(g) ⇌ CO2(g) + H2(g) ΔH = −41 kJ/mol

Silicon is an element in Group IV of the Periodic Table.

This question is about polymers.

The diagram shows part of the Periodic Table. He B C N O F Ne Al Si P S Cl Ar Ga Ge As Se Br Kr I Xe Answer the questions using only the elements...

Magnesium is a metal. State two properties which are characteristic of most metals. 1 2

The equation shows the reaction of calcium carbonate with hydrochloric acid. CaCO3(s) + 2HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)

The table shows some properties of four Group I elements. element | melting point /°C | relative thermal conductivity | atomic radius /nm ---|---|...

Butanoic acid, C3H7COOH, is a carboxylic acid.

Sulfuric acid is made by the Contact process. 2SO2(g) + O2(g) ⇌ 2SO3(g) ∆H = –197kJ/mol