aqa as chemistry unit 2

Initiation in free radical subs

Propagation

Termination (FRS)

Standard enthalpy of formation

why is the enthalpy of formation of oxygen gas zero?

Mean bond enthalpy

Standard enthalpy change of combustion

Enthalpy change

Hess's Law

Oxidation
(in terms of electrons)

Reduction
(in terms of electrons)

Oxidising power
- trend in the halogens

Halide ions as reducing agents

Halogens -
Ionic radius

why is the ionic radius larger than the normal atom?
(in negative ion)

Disproportionation

conditions needed for elimination

conditions needed for nucleophilic subs

geometrical isomer

why are alkenes not used as fuels?

electrophile

positive inductive effect

Electrophilic addition steps

define: polymer

why do alcohols have higher melting and boiling points than alkanes of a similar Mr?

why are shorter chain alcohols soluble in water?

Temperature

Heat

Specific heat capacity

How does a flame calorimeter reduce heat loss?

bond dissociation energy

Gangue

Ore

Roasting