6.1 Group 1

Question 1

What are the group 1 metals known as

Answer 1

The alkali metals

Question 2

Why do alkali metals have similar properties

Answer 2

They all have 1 electron in their outer shell

Question 3

Name the alkali metals

Answer 3

-Lithium
-Sodium
-Potassium
-Rubidium
-Caesium
-Francium

Question 4

Physical properties of alkali metals

Answer 4

-Low melting point and boiling point compared to to other metals
-Very soft

Question 5

How soft are alkali metals

Answer 5

They can be cut with a knife

Question 6

What do alkali metals form

Answer 6

Ionic compounds

Question 7

Why are alkali metals so reactive

Answer 7

They only have 1 electron in their outer shell so they lose it readily to obtain a stable electronic structure

Question 8

What is the trend in reactivity of the alkali metals

Answer 8

The further down the periodic table, the more reactive

Question 9

Why are alkali metals further down the group more reactive

Answer 9

The atomic radius is larger so the outer electron is further from the nucleus and so it is less attracted to the nucleus so less energy is needed to remove it

Question 10

What happens when an alkali metal reacts with water

Answer 10

It forms a hydroxide of the metal and hydrogen gas

Question 11

Reactivity trend with water for the alkali metals

Answer 11

The further down the group, the more violent the reaction

Question 12

Lithium reaction with water observations

Answer 12

Fizzes steadily

Question 13

Sodium reaction with water observations

Answer 13

Melts into a ball then fizzes quickly

Question 14

Potassium reaction with water observations

Answer 14

Gives off sparks and hydrogen burns with a lilac flame

Question 15

Effervescence

Answer 15

Bubbling