past paper questions Flashcards
1
Q
features of dynamic reactions
A
- rate of forward reaction = rate of backward reaction
- mass of reactants remains the same
- the forward and backward reaction occur at the same time
2
Q
features of a homologous series
A
- same chemical properties
- trend in physical properties
- same general formula
3
Q
condition required for reaction propane and bromine
A
uv
4
Q
simple molecular structure characteristics
A
weak intermolecular forces
5
Q
giant covalent structure
A
strong covalent bonds
6
Q
why are some metals malleable
A
because layers of ions can slide over each other
7
Q
equipment used to measure small volumes
A
pipette
8
Q
what state is ethene in
A
gas
9
Q
name of industrial process to manufacture ammonia
A
haber
10
Q
gases needed for haber process
A
nitrogen and hydrogen
11
Q
catalyst used in haber process
A
iron
12
Q
purpose of condensor in haber process
A
to liquefy the ammonia
13
Q
why do addition polymers not biodegrade easily
A
they are inert
14
Q
mol/dm
A
mol/cm * 1000
15
Q
cracking
A
large hydrocarbons become small ones
