The color of the cabbage indicator will change to red or pink if the solution is an acid and it will change to green or yellow if it is a base. It will remain purple or blue if the test solution is ...

and a base can neutralize an acid Students squeeze red cabbage leaves in water to make an acid-base indicator solution. Students add laundry detergent powder (a base) and cream of tartar (an acid) to ...

resulting in the pH of the acid increasing towards 7, and water being produced. A soluble base dissolves in water to form an alkaline solution. During neutralisation the H + ion from the acid ...

The reactivity series shows metals in order of reactivity. The reactivity of a metal is related to its tendency to form positive ions. Iron and aluminium are extracted from their ores in various ways.