A supermarket A train station Sunlight reacting with the water The weathering of rocks
Sodium chloride Sodium bromide Potassium chloride Lithium nitrate
Boiling it Freezing it Bubbling chlorine through it Bubbling oxygen through it
Decrease the temperature Increase the temperature Increase the surface area Decrease the surface area
Decrease the temperature Increase the temperature Decrease the surface area Increase the surface area
Turn green when wet Turn green when dry Never dissolve in water Always dissolve in water
Silver and lead Silver and sodium Sodium and copper Copper and lead