2.2 Dichloroethane, CzH4Cl2, is used to prepare chloroethene. Chloroethene is a monomer which is used to make polyvinylchloride (PVC) as follows:
C2H4Cl2 - CH3CI + PVC
Reaction 1 Reaction 2
2.2.1 Write down the name of reaction 1. (1)
2.2.2 Write balanced structural formulae to represent reaction 1. (3)
2.2.3 Write down the name of reaction 2.
2.2.4 Write the structure of PVC showing two repeat units. (2)​

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explanation:

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.