Bacteria releases acids in the mouth by fermentation of food particles stuck between the teeth and causes cavities. What role does a toothpaste play in reducing this harmful effect and protecting the teeth?

Look at the reaction below. Decide if the product will be acidic, basic or neutral.

• $\text{Strong acid + strong base}$

Look at the reaction below. Decide if the product will be acidic, basic or neutral.

• Weak acid + strong base

Look at the reaction below. Decide if the product will be acidic, basic or neutral.

• Strong acid + weak base