elements in group 7 Flashcards
what is the other name for group 7 elements
halogens
what happens to the colours of the halogens as you go down the group
the colours get darker
what colour and state is chlorine
chlorine is a pale green gas
what colour and state is bromine
dark red liquid
what colour and state is fluorine
a pale yellow gas
what colour and state is iodine
a brittle grey solid
what is the common trend in melting and boiling points in halogens
they increase as you go down the group
write a word equation for when iron reacts with chlorine
iron + chlorine -> iron chloride
what happens to the reactivity as you go down the group 7 elements
they decrease
what is a displacement reaction
where an element from higher up the group takes the place of one from lower
down the group in a compound.
potassium iodide + chlorine ➞ potassium chloride + iodine
