Question

Petrol mix with thermocol which change occurs physical or chemical

Answer 1

Thermocol is made of polystyrene, which is a long chain of carbons that has a phenyl (benzene, C6H5) group coming attached to every other carbon (so on carbon 1,3,5 etc.). It's molecular formula is (C8H8)n, where n is a big number since it's a polymer (many molecules chained together).

Petrol (gasoline) is mixture of hydrocarbons with the formula C(n)H(2n+2). Usually the molecules have 8 carbons (or so), so we can just say its formula is C8H18.

So when petrol and thermocol mix, no reaction happens. BUT, the thermocol will dissolve in the petrol.

Hope this helped you!!

Mark as branliest....

Answer 2

Answer:

So when petrol and thermocol mix, there is no actual reaction happening. Instead, the thermocol just dissolves in petrol. Example: Packing foam that comes with many of the appliance deliveries are made of polystyrene. When we put these foams into petrol, you can see that it just dissolves in petrol.