group 1 - the alkali metals Flashcards
1
Q
as you go down the column..
A
elements are more reactive, they have lower melting and boiling points and have a low density
2
Q
what elements are less dense than water?
A
lithium, sodium and potassium
3
Q
forming ionic compounds with a non metal forms..
A
a 1+ ion. they are so keen to lose so they wouldn’t share. they produce white compounds which dissolve in water to form colourless solutions
4
Q
they react with water to make..
A
hydrogen
5
Q
if you put them in water they will…
A
react vigorously. float, move and fizz furiously
6
Q
what do hydroxides do?
A
they dissolve in water to make alkaline solutions
