Alkali Metals

Question 0

What elements are in the alkali metals

Answer 0

Li
Na
K
Rb
Cs
Fr

Question 1

Which group are the alkali metals

Answer 1

Group 1

Question 2

What are the physical properties of the alkali metals

Answer 2

. Soft
. Shiny and silver when freshly cut
. Tarnish in air within seconds

Question 3

What are the trends in the alkali metals

Answer 3

. Melting and boiling points decrease as you go down

. Densities increase as you go down

Question 4

What happens when sodium reacts with water

Answer 4

. Floats
. Melts into a ball
. Moves around the water
. Bubbles produced

Question 5

What happens when you react lithium with water

Answer 5

. Floats on the water
. Moves around
. Bubbles produced

Question 6

What happens when you react potassium with water

Answer 6

. Floats on surface 
. Moves around on the surface
. Melts into a ball
. Bubbles produced 
. Bursts into a lilac flame

Question 7

What happens when you react rubidium and caesium with water

Answer 7

More violent reaction that potassium, reaction can be explosive.

Question 8

Explain the trend in reactivity within the alkali metals

Answer 8

The atoms react in order to obtain a full outer shell. They do this by losing the outer electron. The more shells there are, the further the outer electron is from the nucleus - so the easier it is to lose.