group 1 elements

Cards (9)

are all group 1 elements metals? 
yes
what are group 1 elements known as?
alkali metals
what do group 1 elements have in common?
all have 1 electron in their outer shell which makes them very reactive and gives them similar properties
what are the trends for alkali metals as you go down the group?
increasing reactivity
lower melting and boiling points
higher relative atomic mass
how do alkali metals form ionic compounds? 
they lose one electron which then makes it a positive ion
what compounds are generally made from alkali metals? 
white solids that dissolve in water to form colourless solutions
what happens when group 1 elements react with water? 
they react very vigorously to produce hydrogen gas and metal hydroxides
what happens when group 1 elements react with chlorine? 
they react vigorously when heated in chlorine gas to form white metal chloride salts
what happens when group 1 elements react with oxygen? 
they form a metal oxide