Group 1 - Alkali Metals

lithium, sodium and potassium in order of least reactive (1) to the most reactive (3)

1. Lithium 2. Sodium 3. Potassium

Write the word equation for this reaction

2Li (lithium) + 2H₂O (water) → 2LiOH (lithium hydroxide) + H₂ (Hydrogen)

(True or false) Alkali metals have seven electrons in their outer shell

False - All Alkali metals have ONE outer shell

(True or false ) Caesium is an alkali metal

False - Group 1 metals include lithium,sodium and potassium

(True or false) All alkali metals burn with a lilac flame

False - water and potassium gets hot enough to produce a lilac flame

Explain why alkali metals all have similar properties

The alkali metals all have ONE outer electron - this gives them all similar properties

(True or false) Alkali metals are stored in oil to stop them reacting with oxygen and water

True - Alkali metals are so reactive they have to stored under oil to stop reacting with moist air

(True or false) Alkali metals increase in reactivity as you go down the group

True - As you go DOWN group 1, the alkali metals become more reactive

After the reaction had finished, Archibald tested the PH of the water. Would it be alkaline, acidic or neutral?

alkaline

Name the gas is given off this reaction

lithium hydroxide

LiOH is also formed during this reaction. What is the name of this type of chemical?

metal hydroxide