Cambridge & Pearson Edexcel Past Paper Questions

The following facts are known about four metals, P, Q, R and S. 1 R displaces both P and S from aqueous solutions of their ions. 2 Q reacts with wa...

Which metal has to be extracted from its ore by electrolysis?

Aluminium is produced by the electrolysis of molten aluminium oxide. Which statement about the process is correct?

Hydrides are compounds of an element and hydrogen only. Which statement is not correct?

In the extraction of iron from its ore in the blast furnace, limestone is added. What is the function of the limestone?

Two pieces of iron, one with zinc attached and the other with copper attached, are placed separately in water as shown. Which statements are correc...

A diagram of a biogas generator is shown. The gas, if collected, can be used as a fuel. However, if the gas is allowed to escape it becomes an atmo...

Which statement about alkanes is correct?

Which statement about members of the homologous series of alcohols is correct?

The diagram shows the partial structure of a polymer. Which pair of reagents could have been used to form this polymer?

Which of the following has not been prepared by reacting a carboxylic acid with an alcohol?

Which statement about the properties of the four alkanes from methane to butane is not correct?

Choose from the following organic compounds to answer the questions below. butane butanoic acid butyl ethanoate ethanol ethyl butanoate methane met...

Some calcium compounds are used by farmers.

Ozone molecules are continually being broken down and formed in the upper atmosphere.

Two isotopes of sulfur are ³²₁₆S and ³³₁₆S.

The flow chart shows some reactions of copper(II) nitrate, Cu(NO3)2. black solid CuO(s) brown gas A colourless gas that relights a glowing splint...

An aqueous solution of ammonium nitrite, NH4NO2, decomposes when heated gently. NH4NO2(aq) → N2(g) + 2H2O(l)

Molybdenum is a transition element. It is used to make steel that is extremely hard. Molybdenum can be manufactured by heating together molybdenum(...

Large quantities of poly(chloroethene) are manufactured annually. The flow chart shows the steps involved in the manufacture of poly(chloroethene)....

Alkanes are a homologous series of saturated hydrocarbons. The table shows information about some alkanes. alkane molecular formula melting point /...

Choose from the following compounds to answer the questions opposite. [Figure A1.1]

Hydrogen reacts with halogens to form hydrogen halides.

Two isotopes of phosphorus are 31P and 32P.

The flow chart shows some reactions of iron(II) sulfate, FeSO4. [Figure A4.1]

Electrolysis is often used in the extraction and purification of elements.

Ammonium carbonate, (NH4)2CO3, is a white solid that is a component of ‘smelling salts'. It decomposes when it is heated. (NH4)2CO3(s) → 2NH3(g) + ...

Titanium can be manufactured by heating titanium(IV) chloride, TiCl4, with magnesium.

The flow chart shows the steps involved in the manufacture of poly(propenenitrile). [Figure B8.1]

Alkenes are a homologous series of unsaturated hydrocarbons. The table shows information about some alkenes. [Figure B9.1]

Which oxide is amphoteric?

Four gas jars each contain one of the gases ammonia, chlorine, hydrogen chloride and oxygen. A strip of damp blue litmus paper and a strip of damp ...

How can a pure sample of barium sulfate be obtained from barium carbonate?

The symbols for two ions are shown. ¹⁹F⁻ ²¹Na⁺ Which statement is correct?

Which dot-and-cross diagram, showing all the outer shell electrons of each atom, is not correct?

Which statement shows that graphite and diamond are different forms of the element carbon?

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?