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Week 18 Year 10- metallic bonding

Posljednje ažuriranje over 2 years ago

8

4

Pitanje 1

1.

Explain why diamond has a very high melting point (4 marks)

1

Pitanje 2

2.

Hydrogen chloride is formed in the reaction between hydrogen and chlorine. The equation for the reaction is H2 + Cl2 è 2HCl
(a) Each molecule in this equation contains the same type of bonding. Name this type of bonding (1 mark)

1

1

1

Pitanje 3

3.

The bonding in a hydrogen molecule is strong. Explain why the boiling point of hydrogen is low (2 marks)

1

Pitanje 4

4.

(a)Explain why silicon dioxide has a high melting point. (2 marks)

1

Pitanje 5

5.

(a)Suggest why the melting point of silicon dioxide is higher than the melting point of sodium chloride. (1 mark)

1

Pitanje 6

6.

(a)State why sodium chloride conducts electricity when molten. (1 mark)

Pitanje 7

7.

Give the definition of metallic bonding ( 1 mark)

Pitanje 8

8.

Explain why metals can conduct electricity and are malleable? (2 marks)