Practise Group 1 questions by describing water-reaction observations, choosing products and explaining reactivity from electron shells.
The diagram shows the positions of some elements in part of the Periodic Table.
Na Al S Cl
K Xe
In
A teacher adds a small piece of sodium to a glass trough containing water and universal indicator.
The universal indicator changes colour.
The equation for the reaction is
Explain the final colour of the universal indicator.
The teacher repeats the experiment with potassium instead of sodium.
Give one similarity and one difference observed with potassium.
similarity
difference
Lithium, sodium and potassium are the first three elements in Group 1 of the Periodic Table.
Suggest why these three elements are all stored in paraffin oil.
Caesium, Cs, is below potassium in Group 1.
Give a similarity and a difference between the reactions of potassium with water and caesium with water.
similarity
difference
Iron metal was discovered several thousand years ago. Iron is produced industrially from iron(III) oxide by extraction using carbon.
Sodium is a metal in Group 1 of the Periodic Table. Sodium was discovered by Sir Humphrey Davy in 1807. It is produced industrially by the electrolysis of sodium chloride.
The diagram shows a simplified version of the Downs cell, which can be used to produce sodium industrially. The electrolyte is molten sodium chloride.
During the production of sodium, small explosions can be heard.
Explain why using sodium chloride that is not completely dry could cause these small explosions.
Explain why the reactivity of metals in Group 1 increases from lithium to potassium.
The diagram shows the positions of some elements in part of the Periodic Table.
Na Al S Cl
K Xe
In
A teacher adds a small piece of sodium to a glass trough containing water and universal indicator.
The universal indicator changes colour.
The equation for the reaction is
Explain the final colour of the universal indicator.
The diagram shows the positions of some elements in part of the Periodic Table.
Na Al S Cl
K Xe
In
A teacher adds a small piece of sodium to a glass trough containing water and universal indicator.
The universal indicator changes colour.
The equation for the reaction is
The teacher repeats the experiment with potassium instead of sodium.
Give one similarity and one difference observed with potassium.
similarity
difference
Lithium, sodium and potassium are the first three elements in Group 1 of the Periodic Table.
Caesium, Cs, is below potassium in Group 1.
Give a similarity and a difference between the reactions of potassium with water and caesium with water.
similarity
difference
Iron metal was discovered several thousand years ago. Iron is produced industrially from iron(III) oxide by extraction using carbon.
Sodium is a metal in Group 1 of the Periodic Table. Sodium was discovered by Sir Humphrey Davy in 1807. It is produced industrially by the electrolysis of sodium chloride.
Explain why the reactivity of metals in Group 1 increases from lithium to potassium.