1.1. Hydrogen and carbon atoms form the hydrocarbon molecule methane. 

The diagram in Figure 1 shows how the outer electrons are arranged in an atom of hydrogen and carbon.  

Figure 1

Complete Figure 2 to show how the outer electrons are arranged in a molecule of methane (CH₄). 

Figure 2

1.2. What is the type of bond in a molecule in methane? 

Tick () one box. 

1.3. Methane has a boiling point of -162 °C. At room temperature it is a gas.

Explain why methane is a gas at room temperature.

1.4. Methane is a simple molecule and it does not conduct electricity. 

Which statement is the correct reason for this? 

Tick () one box.