Question

1. Objects made of plastic are of various shapes and sizes. How do you think plastics are given different shapes? (Hint: Most plastics melt when heated.)​

Answer 1

$\huge \underline{\bf{Answer :- }}$

As liquids have a tendency to take the shape of container therefore, when molten plastic is poured in different vessels, it takes the shape of vessel on cooling. Thus a plastic can be moulded into different shape and sizes.

Answer 2

$\huge \mathcal \fcolorbox{cyan}{black}{ \blue{ANSWER}}$

Thermoset plastics contain polymers that cross-link together and create an irreversible bond, meaning they can’t be remelted - once they take shape, they will be solidified forever. Think of Thermoset as bread: once bread is made, if you try to heat it, it just burns. None of these plastics can be recycled. Some examples of thermoset plastics