chemical changes Flashcards
what is oxidation
gain of oxygen
loss of electrons
what is reduction
gain of electrons
loss of oxygen
what does a soul out ion being molten mean
the ions are free to move around and conduct electricity ( the soloution has to be molten)
how do you make a soloution molten
heat it up
what does PANIC stand for
Postive
Anode
Negative
is
Cathode
are cations negative
no they are positive
Where are cations attracted to
negative cathode
what happens in lead bromide
negative bromide ions are attracted to positive anode
Positive lead ions are attracted to negative cathode
both become discharged
hydrogen is produced at cathode
bromine is formed at anode
at the cathode the metal is produced when…
it’s lower than hydrogen in the reactive series
at the cathode, hydrogen is produced if….
it’s higher than hydrogen . It gets displaced by hydrogen as it’s more reactive
what happens at the anode mostly
oxygen is formes
what happens if halide ions (chlorine, bromine or iodide) are present (what gets produced at the anode)
chlorine, bromine or iodide
