Cambridge & Pearson Edexcel Past Paper Questions

Two solutions are prepared. • Solution P is 0.050 mol/dm³ hydrochloric acid. • Solution Q is 0.100 mol/dm³ butanoic acid. A 2 cm strip of magnesium...

Which compound can be formed by precipitation?

In a neutralisation reaction, which change in particles occurs?

In order to decide which would be the better nitrogenous fertiliser, a student calculates the percentage by mass of nitrogen in both ammonium sulfa...

The manufacture of sulfuric acid by the Contact process involves the use of three different raw materials. How many of these raw materials are elem...

The diagram shows part of the Periodic Table.. Which two letters represent elements that can react together to form covalent compounds?

Which statement about elements in the Periodic Table is correct?

Which statement about the properties of the elements in Group VIII of the Periodic Table, helium to xenon, is correct?

Which two statements indicate that metal M may have a proton number between 21 and 30? 1 It conducts electricity. 2 It does not react with water. 3...

Different metals react with water in different ways. Which statement is correct?

Metal X is more reactive than zinc but less reactive than sodium. What would be the best method for obtaining metal X from its ore?

Steel is often galvanised. Which statements about galvanising are correct? 1 Galvanising makes a steel alloy. 2 Galvanising provides a sacrificial ...

In the extraction of aluminium from aluminium oxide, the following three reactions take place. 1 Al3+ + 3e– → Al 2 2O2– → O2 + 4e– 3 C + O2 → CO2 W...

The carbon cycle regulates the amount of carbon dioxide in the atmosphere. Combustion, photosynthesis and respiration are involved in this cycle. H...

The structure of compound X is shown. [Structure of compound X (propene)]. Four statements are made about compound X. 1 X burns in air to form carb...

Which compound could be a flavouring in a non-alcoholic fruit drink?

P is a polymer that: • has six carbon atoms in each of the monomers from which it is formed • is not a polyester • is formed using condensation pol...

In a titration, 25.0 cm³ of aqueous sodium hydroxide is transferred into a conical flask. A few drops of indicator are added. Dilute hydrochloric a...

Pure oxygen is needed by many industries. How is pure oxygen obtained in large amounts for such uses?

When aqueous sodium hydroxide is added to aqueous compound X, a red-brown precipitate is formed. When dilute nitric acid followed by aqueous barium...

A sample of gas is released at a particular point in a laboratory. A detecting device is placed ten metres from the point where the gas is released...

The table shows data for some particles. What are the values of W, X and Y?

A covalent compound P has the empirical formula CH2O. Which structure represents P?

When gases react, the volume of gaseous reactants may be different from the volume of gaseous products. For which reaction is the percentage change...

Sodium carbonate reacts with dilute hydrochloric acid. Na2CO3 + 2HCl → 2NaCl + H2O + CO2 A sample containing 0.0800 mol of sodium carbonate is adde...

Which statement about the electrolysis of solutions is correct?

The apparatus shown is set up to plate a steel key with copper. The key does not get coated with copper. Which change needs to be made to plate the...

The equation shows the reaction of glucose with oxygen. C6H12O6 + 6O2 → 6CO2 + 6H2O Which statement about this reaction is correct?

The energy profile diagram of a chemical reaction is shown. Which statement is correct?

The apparatus shows a method of following the rate of the reaction between magnesium carbonate, MgCO3, and dilute nitric acid, HNO3. MgCO3(s) + 2HN...

Aqueous bromine is added to aqueous sodium chloride. Which statement is correct?

Which statement is correct for all reversible reactions that have reached dynamic equilibrium?

Which methods could be used to make a pure sample of copper(II) sulfate? 1 acid + metal carbonate 2 acid + metal oxide 3 acid + metal 4 precipitation

Ammonia is made by a reversible reaction. N2(g) + 3H2(g) ⇌ 2NH3(g) ΔH = −92 kJ/mol A chemist investigates how the percentage of ammonia at equilibr...

Which statement about sulfur dioxide, SO2, is correct?

The diagram shows part of the Periodic Table. Which two letters represent elements that can react together to form covalent compounds?

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

These statements are about the halogens. 1 All halogens are non-metallic, diatomic molecules. 2 Chlorine displaces both bromine and iodine from aqu...

The table gives properties of four metals, P, Q, R and S. Which statement is correct?

Which statements about extracting metals from their ores are correct? 1 Aluminium is extracted by the electrolysis of aluminium oxide dissolved in ...

Which statements about the corrosion of iron are correct? 1 Corrosion can be prevented by coating the iron with zinc. 2 Corrosion only occurs in th...

Which statements are correct? 1 Chlorination is used to remove unpleasant tastes from drinking water. 2 Desalination can be achieved using distilla...

Two isomers are shown. Which statements about these isomers are correct? 1 They have the same empirical formula. 2 They have different molecular fo...

A hydrocarbon compound Q has molecular formula CxHy. Q reacts with hydrogen to form a single product with molecular formula CxHy+2. Which statement...

Which structural formula represents an alcohol?

Choose from the following oxides to answer the questions. aluminium oxide calcium oxide iron(II) oxide magnesium oxide silicon dioxide sodium oxide...

Dry air contains nitrogen, oxygen, noble gases and carbon dioxide.

Iron powder reacts with dilute sulfuric acid. Fe(s) + H₂SO₄(aq) → FeSO₄(aq) + H₂(g) (a) The graph shows the volume of hydrogen gas produced at 20°C...

Alkenes are a homologous series of hydrocarbons.

Magnesium undergoes oxidation when it reacts with aqueous silver nitrate. Mg + 2Ag⁺ → Mg²⁺ + 2Ag