Cambridge & Pearson Edexcel Past Paper Questions

In this experiment, you will measure the efficiency of a small electric heater constructed from a coil of wire. You are provided with a circuit con...

You will investigate the refraction of light through a transparent block. You are provided with: • a rectangular transparent block • an illuminated...

You will measure the average mass of a marble (glass ball) and investigate the speed of a marble rolling down a slope. You are provided with: • a s...

A solar cell is a device that can generate electrical power when light falls on it. You are given a solar cell connected to a fixed resistor as in ...

In this experiment you will investigate a light dependent resistor (LDR). You are provided with: • a power supply • a switch • a voltmeter with two...

In this experiment, you will investigate the absorption of thermal radiation by different coloured surfaces. You are provided with: • a lamp connec...

In this experiment you will use a balancing method to determine the mass of a metre rule. You have been provided with: • a metre rule with a millim...

A student investigates the rate of cooling of hot water in a beaker. Plan an experiment to investigate the relationship between the thickness of th...

A student measures the efficiency of a small electric heater.

A student investigates the refraction of light through a transparent block.

A student measures the average mass of a marble (glass ball) and investigates the speed of a marble rolling down a slope.

A student investigates a light dependent resistor (LDR). The student constructs a series circuit consisting of a power supply, the LDR, a 560 Ω res...

A student investigates the absorption of thermal radiation by different coloured surfaces. The student has arranged a thermometer which has a piece...

A student uses a balancing method to determine the mass of a metre rule.

Which is an anion that is present in the solution formed when an excess of dilute hydrochloric acid is added to calcium carbonate?

What correctly describes the molecules in very dilute sugar solution at room temperature?

The diagram shows a simple laboratory apparatus for the preparation and collection of a dry gas. What is the gas?

A mixture containing equal volumes of two liquids that mix completely but do not react together is placed in the apparatus shown and heated until t...

Which graph shows the number of electrons in the outer shell of an atom, plotted against the proton (atomic) number for the first ten elements in t...

Which pair of elements, when combined together, do not form a covalent compound?

The diagram shows the structure of a covalent compound containing the element hydrogen, H, and the unknown elements X, Y and Z. To which groups of ...

A metal consists of a lattice of positive ions in a 'sea of electrons'. What changes, if any, take place to the electrons and positive ions in a me...

What is the mass of one mole of carbon-12?

Two different hydrocarbons each contain the same percentage by mass of hydrogen. It follows that they have the same

The diagram shows the electrolysis of a concentrated aqueous solution containing both copper(II) ions and sodium ions. Which metal is deposited at ...

The diagram shows the apparatus used to electrolyse lead(II) bromide using inert electrodes. Why does the lamp light up only when the lead(II) brom...

A student performs two reactions. reaction 1 10 g of magnesium ribbon with excess 2.0mol/dm³ dilute hydrochloric acid reaction 2 5g of magnesium po...

Which statement about catalysts is correct for a typical equilibrium reaction?

When a solution containing silver ions is added to a solution containing iron(II) ions, an equilibrium is set up. Ag+(aq) + Fe2+(aq) ⇌ Ag(s) + Fe3+...

Which reaction does not involve either oxidation or reduction?

Which pair of compounds could be used in the preparation of calcium sulfate?

A metal reacts with dilute hydrochloric acid to produce a gas. What is used to identify this gas?

Titration of an acid against a base is a method often used in the preparation of salts. Which properties of the acid, the base and the salt are req...

The diagram shows part of the Periodic Table. Which pair of letters represents elements that are in the same period?

Which row shows the correct number of protons and electrons in the ion of an element in Group II of the Periodic Table?

The oxide of an element X increases the rate of decomposition of hydrogen peroxide. At the end of the reaction the oxide of X is unchanged. Which d...

Which element is sodium?

Which substances react together to give hydrogen?

In the extraction of iron, carbon monoxide acts as

An alloy of copper and zinc is added to an excess of dilute hydrochloric acid. Which observations are correct?

From your knowledge of the manufacture of both aluminium and iron, what is the order of chemical reactivity of aluminium, carbon and iron towards o...

Which compound will not produce ammonia when heated with ammonium sulfate?

These reactions are used in the manufacture of sulfuric acid. P S + O2 → SO2 Q 2SO2 + O2 ⇌ 2SO3 R SO3 + H2O → H2SO4 Which reactions are speeded up ...

Why is carbon used in the purification of drinking water?

Which gas burns in air to form only one product?

The diagram shows apparatus for measuring the volume of hydrogen given off when an excess of dilute hydrochloric acid is added to powdered metal. T...

The list shows three chemical reactions. 1 combustion of ethanol 2 fermentation of glucose 3 reaction of ethanol with ethanoic acid to give an este...

The diagram shows a reaction scheme. ethene + steam catalyst → compound X acidified potassium dichromate(VI) → compound Y compound X → compound Z W...

How does the number of carbon, hydrogen and oxygen atoms in an ester differ from the total number of carbon, hydrogen and oxygen atoms in the alcoh...

The two statements are about the fractional distillation of crude oil. The statements may or may not be correct. They may or may not be linked. sta...