CAIE IGCSE Chemistry 2.7 Metallic Bonding Topic Practice

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Covered syllabus points

2.7.1—Metallic bonding as the electrostatic2.7.2—Metallic properties from

Question 1

[Maximum number: 1]

Which particles are present in the structure of metals?
1 positive ions
2 negative ions
3 shared pairs of electrons
4 mobile electrons

A

1 and 2

B

1 and 4

C

2 and 3

D

2 and 4

Question 2

[Maximum number: 1]

This question is about the elements sodium and fluorine and the compound sodium fluoride.

Some properties of sodium, fluorine and sodium fluoride are shown in Table 3.1.

Table 3.1

Table 3.1

Explain why sodium conducts electricity when it is a solid.

Question 3

[Maximum number: 1]

Which statement describes the structure of copper?

A

It has a lattice of negative ions in a 'sea of electrons'.

B

It has a lattice of negative ions in a 'sea of protons'.

C

It has a lattice of positive ions in a 'sea of electrons'.

D

It has a lattice of positive ions in a 'sea of protons'.

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