Group 1 (alkali metals)

Question 1

what groups are alkali metals in

Answer 1

1

Question 2

how many electrons do alkali metals have on the outer shell

Answer 2

one electron - making them very reactive and gives them similar properties

Question 3

what are the properties of alkali metals

Answer 3

soft metals, high thermal and electrical conductivity, ductile and malleable

Question 4

what are the trends as you go down group 1

Answer 4

increasing reactivity- outer shell is more easily lost as the attraction between the nucleus and electron decreases because the electron is further away from the nucleus as you go down group 1.
lower melting and boiling point.
Higher relative atomic mass

Question 5

what happens when alkali metals react with chlorine

Answer 5

react vigorously when heated in chlorine gas to form white salts

Question 6

what happens when alkali metals react with water

Answer 6

react vigorously producing hydrogen.
They also form hydroxides that dissolve in water to give alkaline solutions.

Question 7

what happens when alkali metals react with oxygen

Answer 7

form a metal oxide
e.g: lithium oxide