1) Simple molecular / Giant Ionic / Giant Covalent / Simple Metallic / Giant Metallic

[7]

a) Copper

b)Diamond

c)Carbon dioxide

d)Sodium Chloride

e)Aluminium Chloride

f)Aluminium

g)Graphite

2) Why is the melting point of CO very low? [3]

3) Why is the boiling point of pentane HIGHER than that of propane? [3]

4) a) Symbol equation for complete combustion of butane: [1]

b) Symbol equation for incomplete combustion of butane: [2]

2: How structure influences the properties and uses of substances

c) Why is incomplete combustion bad? How can we stop it? [2]

5) Why is diamond HARDER than graphite if both of them have the same chemical

formula (C) ? [6]

6)Draw the structure of hexanoic acid. [1]

7) Borane (BH3) is very unstable and quite reactive. Draw the structure and explain the

source of instability. [3]

8) Simple molecular structure such as CO, CO2, Cl2, etc. do not conduct electricity.

Explain why. [1]

9) Explain fully the electrical and thermal conductivity of Rubidium Astatide. [5]

10) Give uses for carbon fullerenes. [2]

11) Describe the bonding in silica ( silicon dioxide) . [2]

12) Nitinol is an example of a

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As is returns to its shape after it’s been deformed. It is commonly used for

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[2]

13) Explain the difference between thermosoftening and thermosetting polymers.

(*mention intermolecular forces)

[2]

14) What is a nanoparticle? [1]

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