Cambridge & Pearson Edexcel Past Paper Questions

In order to form a compound with oxygen, an atom of a Group II element must

Copper wire is used to complete an electrical circuit. What happens in the copper wire?

Which uses for sulfuric acid are correct? 1 as a bleach in the manufacture of wood pulp for paper 2 as a food preservative in tinned foods 3 as a r...

Group I metals form compounds with Group VII halogens. The compounds formed are ......1...... in water and contain ..2 bonds. Which words correctly...

Compound P is the only substance formed when two volumes of ammonia gas react with one volume of carbon dioxide gas (both volumes being measured at...

Two isotopes of chlorine are ³⁵Cl and ³⁷Cl. Using these isotopes, how many different relative molecular masses are possible for the compound with m...

Gases can diffuse through porous pots. The diagram shows a beaker full of nitrogen inverted over a porous pot containing carbon monoxide. The water...

Aqueous copper(II) sulfate is electrolysed using carbon electrodes. Which observations will be made?

Which ion is not present in dilute sulfuric acid?

The diagram shows an energy profile diagram for a chemical reaction, both with and without a catalyst. Which energy change is the activation energy...

Which equation does not represent a redox reaction?

The diagram shows the apparatus used to measure the rate of the reaction between calcium carbonate and dilute hydrochloric acid. The mass of the fl...

Which row correctly compares high carbon steels and low carbon steels?

Which process does not involve the use of a catalyst?

Gaseous compound X is an oxidising agent. X is bubbled through separate solutions of aqueous potassium iodide and acidified potassium manganate(VII...

Which metal oxide will be reduced by heating with iron?

Which pair of substances can be used to prepare a sample of lead(II) chloride when added to water and mixed?

The pH of an aqueous solution of hydrochloric acid is 2. What will be the pH of the acid after the addition of 10g of sodium chloride?

Which statement about the elements in the Periodic Table is correct?

Iron is extracted from haematite in the blast furnace. Which other raw material is added in this extraction?

The diagram shows a flow chart for the manufacture of fertiliser. In the flow chart, what are W, X, Y and Z?

The table gives the melting points, densities and electrical conductivities of four elements. Which element is copper?

Which gases are all present at the positive electrode during the manufacture of aluminium?

The diagram shows the structure of brass. Why is brass harder than pure copper?

Which pollutant causes eutrophication in rivers?

How many moles of hydrogen chloride are formed when one mole of methane reacts with a large excess of chlorine in sunlight?

Which statements about alcohols are correct? 1 All alcohols contain the hydroxide ion, OH⁻. 2 Ethanol can be formed from ethene using a reaction ca...

Amino acids are essential building blocks in the human body. Macromolecules in food are hydrolysed to form amino acids. Which macromolecules provid...

Ethanol, C₂H₆O, was reacted with propanoic acid, C₃H₆O₂, in the presence of concentrated sulfuric acid. Which statement about the organic product o...

How can alkenes be manufactured?

Polymer Z has the structure shown. These four terms can be used to describe polymers. 1 addition polymer 2 condensation polymer 3 polyamide 4 polye...

Which row correctly identifies the gas?

A student plans two experiments. experiment 1 find the concentration of a solution of sodium hydroxide by titration with dilute hydrochloric acid e...

Q is a pure sample of a substance that has a single Rl value of 0.9. In the chromatogram shown, which letter represents Q?

Which statement about the isotopes of bromine is correct? They are atoms with the same number of

Compound Z is made from element X and element Y. Compound Z is a good conductor of electricity when molten but not when solid. Which statement is c...

Copper wire is used to complete an electrical circuit. What happens in the copper wire?

Ethene, C2H4, is a covalent compound with a simple molecular structure. Which statement about ethene is correct?

An organic compound has the molecular formula C8H16O4. What is the empirical formula of the compound?

Copper is purified by electrolysis. Which statement is not correct?

Concentrated aqueous sodium chloride is electrolysed using inert electrodes until no more chlorine gas is evolved. What could be the pH of the resu...

Ammonia can be produced industrially from nitrogen and hydrogen. N2(g) + 3H2(g) ⇌ 2NH3(g) The forward reaction is exothermic. Which change would no...

Oil floats on water. Which statement is not true of oil and water?

Which statement does not describe a reduction reaction?

One mole samples of each of the solid carbonates of lead, calcium, barium and magnesium are reacted in turn with excess dilute sulfuric acid. Which...

In which reaction are two of the products salts?

The diagram shows the structure of brass. Why is brass harder than pure copper?

From their position in the Periodic Table, which statement is correct?

An atom of an element has eight electrons only. Which statement about this element is correct?

The diagram shows a flow chart for the manufacture of fertiliser. In the flow chart, what are W, X, Y and Z?