1. States of matter

1.1 Solids, liquids and gases

1.2 Diffusion

2. Atoms, elements and compounds

2.1 Elements, compounds and mixtures

2.2 Atomic structure and the Periodic Table

2.3 Isotopes

2.4 Ions and ionic bonds

2.5 Simple molecules and covalent bonds

2.6 Giant covalent structures

2.7 Metallic bonding

3. Stoichiometry

3.1 Formulae

3.2 Relative masses of atoms and molecules

3.3 The mole and the Avogadro constant

4. Electrochemistry

4.1 Electrolysis

4.2 Hydrogen–oxygen fuel cells

5. Chemical energetics

5.1 Exothermic and endothermic reactions

6. Chemical reactions

6.1 Physical and chemical changes

6.2 Rate of reaction

6.3 Reversible reactions and equilibrium

6.4 Redox

7. Acids, bases and salts

7.1 The characteristic properties of acids and bases

7.2 Oxides

7.3 Preparation of salts

8. The Periodic Table

8.1 Arrangement of elements

8.2 Group I properties

8.3 Group VII properties

8.4 Transition elements

8.5 Noble gases

9. Metals

9.1 Properties of metals

9.2 Uses of metals

9.3 Alloys and their properties

9.4 Reactivity series

9.5 Corrosion of metals

9.6 Extraction of metals

10. Chemistry of the environment

10.1 Water

10.2 Fertilisers

10.3 Air quality and climate

11. Organic chemistry

11.1 Formulae, functional groups and terminology

11.2 Naming organic compounds

11.3 Fuels

11.4 Alkanes

11.5 Alkenes

11.6 Alcohols

11.7 Carboxylic acids

11.8 Polymers

12. Experimental techniques and chemical analysis

12.1 Experimental design

12.2 Acid–base titrations

12.3 Chromatography

12.4 Separation and purification

12.5 Identification of ions and gases

IGCSE Chemistry 11.5 Alkenes Question Bank

[Maximum number: 1]

A list of substances is shown.
> barium nitrate carbon monoxide hydrated cobalt(II) chloride copper(II) oxide anhydrous copper(II) sulfate ethane potassium iodide propene sodium bromide sulfur dioxide zinc oxide

Answer the following questions using only the substances from the list. Each substance may be used once, more than once or not at all.

Give the name of the substance that:

(a)

is an unsaturated hydrocarbon

[ 1 ]

(a)

The structures of five organic compounds, A, B, C, D and E, are shown.
Answer the questions that follow.
Each letter may be used once, more than once or not at all.
A

E
E

[ 1 ]

(i)

Give the letter of one compound that reacts with bromine in an addition reaction.

[ 1 ]

(a)

Five organic compounds have the following structures.
A
C
C
A
,

B
B

[ 1 ]

(i)

Which compound can be made by reacting an alkene with bromine?

[ 1 ]

[Maximum number: 1]

Some symbol equations and word equations, A to J, are shown.

A $\mathrm{Fe}^{3+}+3 \mathrm{OH}^{-} \rightarrow \mathrm{Fe}(\mathrm{OH})_{3}$

B $\mathrm{H}^{+}+\mathrm{OH}^{-} \rightarrow \mathrm{H}_{2} \mathrm{O}$

C ethane + chlorine → chloroethane + hydrogen chloride

D $\mathrm{C}_{12} \mathrm{H}_{26} \rightarrow \mathrm{C}_{8} \mathrm{H}_{18}+\mathrm{C}_{4} \mathrm{H}_{8}$

E ethene + steam → ethanol
F chlorine + aqueous potassium iodide → iodine + aqueous potassium chloride

G $\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} \rightarrow 2 \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{OH}+2 \mathrm{CO}_{2}$

H ethanoic acid + ethanol → ethyl ethanoate + water
I calcium carbonate → calcium oxide + carbon dioxide

J $6 \mathrm{CO}_{2}+6 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{O}_{2}$

Use the equations to answer the questions that follow.
Each equation may be used once, more than once, or not at all.
Give the letter, A to J, for the equation that represents:

(a)

cracking. [1]
[Total: 6]

[ 1 ]

[Maximum number: 1]

Some symbol equations and word equations, A to J, are shown.

A $\mathrm{H}^{+}+\mathrm{OH}^{-} \rightarrow \mathrm{H}_{2} \mathrm{O}$

B $\mathrm{Cr}^{3+}+3 \mathrm{OH}^{-} \rightarrow \mathrm{Cr}(\mathrm{OH})_{3}$

C methane + chlorine → chloromethane + hydrogen chloride
D propene + bromine → 1,2-dibromopropane

E $\quad \mathrm{C}_{10} \mathrm{H}_{22} \rightarrow \mathrm{C}_{8} \mathrm{H}_{18}+\mathrm{C}_{2} \mathrm{H}_{4}$

F chlorine + aqueous potassium bromide → bromine + aqueous potassium chloride
G methane + oxygen → carbon monoxide + water

H $\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{COOH}+\mathrm{CH}_{3} \mathrm{OH} \rightarrow \mathrm{C}_{2} \mathrm{H}_{5} \mathrm{COOCH}_{3}+\mathrm{H}_{2} \mathrm{O}$

I hydrogen + oxygen → water

J $6 \mathrm{CO}_{2}+6 \mathrm{H}_{2} \mathrm{O} \rightarrow \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+6 \mathrm{O}_{2}$

Use the equations to answer the questions that follow.
Each equation may be used once, more than once, or not at all.
Give the letter, A to J, for the equation which represents:

(a)

an addition reaction [1]

[ 1 ]

(a)

State one gas which:

[ 1 ]

(i)

is unsaturated

[ 1 ]

[Maximum number: 1]

Ethene is an unsaturated hydrocarbon.

Which description of the bonding in ethene is correct?

All atoms in the molecule have a share of eight electrons.

Each carbon atom shares two of its electrons with hydrogen atoms and two of its electrons with a carbon atom.

Each carbon atom shares two of its electrons with hydrogen atoms and one of its electrons with a carbon atom.

The two carbon atoms share a total of six electrons with other atoms.

[Maximum number: 2]

Cyclopropane is a colourless gas.
Cyclopropane reacts with bromine at room temperature. The chemical equation for the reaction is shown.

(a)

(i)

What colour change, if any, would you see when cyclopropane is bubbled into aqueous bromine?
initial colour
final colour

[ 2 ]

[Maximum number: 2]

Fluorine is a Group VII element. Fluorine forms compounds with metals and non-metals.

(a)

Tetrafluoroethene is an unsaturated compound with the formula $\mathrm{C}_{2} \mathrm{~F}_{4}$ . Tetrafluoroethene is the monomer used to make the polymer poly(tetrafluoroethene).