Bonding & Structure | Cambridge (CIE) AS Chemistry Exam Questions & Answers 2023 [PDF]

1

1 mark

Which solid has a giant covalent lattice structure?

Calcium fluoride
Nickel
Silicon (IV) dioxide
Sulfur

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2

1 mark

The table shows the physical properties of four substances, A, B, C and D.

Which substance has a giant ionic lattice?

substance	melting point / °C	boiling point / °C	electrical conductivity of solid	electrical conductivity of liquid	electrical conductivity of aqueous solution
A	−119	39	poor	poor	insoluble
B	−115	−85	poor	poor	good
C	993	1695	poor	good	good
D	1610	2230	poor	poor	insoluble

Z

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3

1 mark

Three substances, R, S and T, have the physical properties shown.

substance	melting point / °C	boiling point / °C	electrical conductivity of liquid
R	772	1407	good
S	114	183	poor
T	1610	2205	poor

Which row shows the most likely lattice structure for each substance?

	R	S	T
A	giant molecular	simple molecular	ionic
B	ionic	giant molecular	simple molecular
C	ionic	simple molecular	giant molecular
D	simple molecular	ionic	giant molecular

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4

1 mark

Each diagram shows a type of giant lattice structure.

Diagrams of three giant lattices: 1 layered graphite carbon, 2 cubic sodium chloride with Na and Cl ions, 3 tetrahedral diamond carbon network.

Which row correctly identifies the type of lattice shown in each diagram?

	Diagram 1	Diagram 2	Diagram 3
A	giant covalent	giant ionic	giant covalent
B	giant covalent	giant covalent	giant ionic
C	giant ionic	giant ionic	giant covalent
D	giant ionic	giant covalent	giant ionic

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1

1 mark

Three substances, X, Y and Z, have the physical properties shown.

substance	melting point / °C	boiling point / °C	electrical conductivity of solid	electrical conductivity of liquid
X	801	1413	poor	good
Y	2852	3600	poor	good
Z	3550	4827	good	not known

Which row gives the identities of substances X, Y and Z?

	X	Y	Z
A	CaF₂	KCl	Cu
B	NaCl	MgO	C (graphite)
C	NaBr	CaO	C (diamond)
D	NaBr	BaO	SiO₂

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2

1 mark

In which physical states does sodium chloride conduct electricity?

	solid	molten	aqueous
A	✓	✓	✗
B	✓	✗	✓
C	✗	✓	✓
D	✗	✗	✓

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1

1 mark

Which compounds form a giant ionic lattice in the solid state?

	silicon dioxide	ammonium sulfate	potassium iodide
A	✓	✓	✗
B	✓	✗	✓
C	✗	✓	✓
D	✗	✗	✓

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2

1 mark

Which row correctly describes the properties of hydrogen fluoride?

	contains localised covalent bonds	highly soluble in polar solvents	lowest bond energy of the hydrogen halides	highest boiling point of the hydrogen halides
A	✗	✓	✗	✓
B	✓	✓	✗	✓
C	✗	✓	✓	✓
D	✗	✗	✓	✗

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Bonding & Structure (Cambridge (CIE) AS Chemistry): Exam Questions