Group 1

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Recall how the alkali metals react with water and how this reaction changes as we travel down the group.

Recall whether these reactions are endothermic or exothermic.

Slide 9

Group 1 – The alkali metals

1) These metals all have _ electron in their outer shell

Some facts…

2) Reactivity increases as you go _ the group. This is because the electrons are further away from the _ every time a _ is added, so they are given up more easily.

3) They all react with water to form an alkali (hence their name) and , e.g:

Words – down, one, shell, hydrogen, nucleus

Slide 10

Plenary 1.

Predict

What would happen if rubidium was added to water.

1. how fast will it react?

2. Will it be endothermic or exothermic?

3. What gas will be formed?

4. What would be the word equation

Slide 11

Plenary 2.

Predict

What would happen if caesium was added to water.

1. how fast will it react?

2. Will it be endothermic or exothermic?

3. What gas will be formed?

4. What would be the word equation?