3.5 I can recall the reaction of methane and bromine

Alkanes react with bromine in the presence of UV Light

·         Explain why this condition is necessary  UV light is the source on energy in order to break the weak inter molecular forces in between molecules.

3.       What is this type of reaction called A substitution reaction 

4.       State and explain the observations - Alkanes are colourless and bromine is brown, when the reactants are given energy to break intermolecular bonds the bromine is less saturated and the product is therefore colourless 

5.       Draw the displayed formula of the reaction between methane and bromine (upload a photo)

6.       Write out a balanced (with state symbols) the reaction between ethane and chlorine

C₂H₆ + Cl₂ à C₂H₅ + HCl

7.       State and explain the observations in this chemical reaction

The chorine begins as a green/yellow gas, when it reacts the chlorine is less saturated and the product is more saturated making the product colourless