Properties Of Plastics Flashcards
1
Q
Polymers
A
Very long chain molecules made from monomers
2
Q
Polymerisation
A
The process in which monomers join together
3
Q
Addition polymerisation
A
When monomers join together
The breaking of a double bond
4
Q
Condensation polymerisation
A
Reacting across functional groups (carboxyl and hydroxyl)
Water is often released
5
Q
Stopping polymerisation reactions
A
Add an acid or an alcohol with only one functional group so the reaction can only occur at one end
6
Q
Thermoplastic plastic
A
Can be softened or melted by heating and then reshaped
7
Q
Thermosetting plastic
A
Does not soften when heated (crosslinks)
8
Q
Properties of plastics
A
Light weight Strong Flexible Heat and electrical insulators Water repellent
9
Q
Problems with burning plastic
A
Give off poisonous gases
Plastics contain carbon so they all produce carbon dioxide, carbon monoxide and smoke
