CHEMISTRY 2019 Flashcards
1
Q
Why does this type of polyester melt when it is heated
A
any two from:
(to make the board)
* harder
* stronger
* tougher
* more rigid
* waterproo
2
Q
A
paper 2 > CHEMISTRY 2019 > Flashcards
Why does this type of polyester melt when it is heated
any two from:
(to make the board)
* harder
* stronger
* tougher
* more rigid
* waterproo