random Flashcards
(8 cards)
1
Q
What do the properties of polymers depend on
A
- monomer used
- conditions of the reaction (temperature, pressure, catalyst)
2
Q
themrmosftening, what happens and structure and why its like that
A
- individual polymer chain
- softens and melts when heated
- weak intermolecular forces
3
Q
thermosetting, what happens and structure and why its like that
A
- chains with cross links between them
- does not melt
- strong covalent bonds hold the structure
4
Q
How do catalysts increase rate of reaction
A
provides alternative pathway with lower activation energy
5
Q
How to test for carbonates
A
add dilute acid, causes it to fizz, which turns limewater cloudy
6
Q
How to test for Halides
A
silver nitrate and dilute nitric acid
7
Q
How to test for sulfates
A
barium chloride and dilute hydrochloric acid
8
Q
A
