3. What do you think will happen to the chicken bones and egg that have been left to soak in the vinegar?

4. What happens when we add baking soda to the vinegar we soaked the bones and egg in? Is baking soda an acid or alkali? Write down your observations.

5. If a wasp stings you, you should put vinegar on the sting – why?

6. But if a bee stings you, you should put baking soda on it. Can you think why?

7. Acid in our mouth can damage our teeth. We use tooth paste every day to neutralise the acid. Toothpaste is an ………..?

8. When we get indigestion we take indigestion tablets. Indigestion is caused by too much acid in the stomach. What do indigestion tablets do and how?

9. Soil is sometimes acidic, what do farmers add to the field to help their crops grow? And Why?

10. All of these questions have one thing in common. What is it? NEUTRALISATION