Chemical Properties of Ethene:
1. Combustion – it burns in oxygen to produce water and carbon (IV) oxide
C2H4(g) + 3O2(g) → 2CO2(g) + 2H2O(l)
2. Addition reaction – it undergoes addition reactions with some atoms like hydrogen, chlorine etc to form a saturated compound
C2H4(g) + H2(g) → C2H6(g)
3. Polymerization – It is the combination of two or more small molecules (monomers) to form a larger molecule (polymers)