halogens Flashcards
halogens are in which group
group 7
non metals or metals
non metals
which is the most reactive halogen
fluorine
what is iodine used for
to kill bacteria (medical use)
what is chlorine used for
it can kill bacteria in swimming pools
what is the state/colour (pure)/ colour (aq) of fluorine
gas / yellow / colourless
what is the state/colour (pure)/ colour (aq) of chlorine
gas/ pale green / colourless
what is the state/colour (pure)/ colour (aq) of bromine
liquid/ orange / yellow
what is the state/colour (pure)/ colour (aq) of iodine
solid / grey / brown
what is the state/colour (pure)/ colour (aq) of astatine
solid / black / brown
what is a halide
a halide is when a halogen reacts with another substance, gains an electron and becomes a negative ion.
Once it had reactive the name changes to -ide
halogen + halide ->
halide salt + halogen
all halogens are bocihnf
diatomic
