Home > Science > Additional OCR Gateway Science Topics > The Periodic Table > Alkali metals
The Periodic Table
What products are formed when lithium reacts with water?
Lithium oxide and water
Lithium hydroxide and hydrogen
Lithium hydride and oxygen
What colour is produced by a potassium compound in a flame test?
The alkali metals all have similar properties because:
They all have one electron in their outer shells
They have similar atomic numbers
They're all in the Periodic Table
Which is the correct order of reactivity of the elements shown, starting with the most reactive?
Potassium then sodium then lithium
Lithium then sodium then potassium
Sodium then lithium then potassium
Why are the alkali metals stored under oil?
To stop them from dissolving
To prevent them from reacting with moisture in the air
So that they can be seen more easily
Choose the correct statement about the elements in Group 1:
They all produce an acid when reacted with water
They're all equally reactive
They all produce an alkali when reacted with water