Cambridge & Pearson Edexcel Past Paper Questions

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

Phosphorus is an element in Group V of the Periodic Table.

Proteins are natural polymers.

A student needs to measure 17.60 cm³ of hydrochloric acid. The student has access to the apparatus commonly found in a school laboratory. Which pie...

Some substances may be separated using paper chromatography. The diagram shows the results of running two mixtures in a suitable solvent. Which spo...

Petroleum (crude oil) is separated into useful fractions by fractional distillation. The positions at which fractions X and Y are collected from th...

Compound X is a crystalline solid at room temperature and pressure. An aqueous solution of X is tested as shown. What could be the identity of X?

When aqueous sodium hydroxide is added to a solution, a white precipitate forms which dissolves when excess sodium hydroxide is added. Which ion co...

Why does a balloon full of helium gas become smaller as the temperature changes from 30 °C to 10 °C?

The diagram of an ion is shown. What can be deduced about the number of protons in this ion?

The circuit diagram shows an experiment using a rod of copper and a rod of graphite. [Circuit diagram] When the switch is closed, the bulb lights b...

Which material has the highest melting point?

Which statement describes ionic bonds?

The diagram shows the covalent bonds in an organic compound. The total number of electrons in one molecule of this compound is .X....... The total ...

Which contains the greatest mass of oxygen?