Question

Enamel has calcium phosphate Ca3(PO4)2. When we eat sweets, they form acid in our

mouth which reacts and tooth decay starts. To avoid tooth decay, we should brush our teeth

after every meal.

(i) Is toothpaste acidic, basic or neutral?

(ii) How does acid form in our mouth after eating food?

(iii) Explain the action of toothpaste in preventing tooth decay.

(iv) Which type of reaction can be studied with the help of above paragraph?

Define the reaction.​

Answer 1

Answer:

(i) Toothpastes are usually weakly basic in nature

(ii) our stomach produces natural acids that help our body digest food. Sometimes, these acids travel up the throat and into the mouth, especially after a large meal. Ordinarily, our saliva rebalances the acid levels in our mouth and everything's fine.

(iii) it make teeth stronger and prevent cavities, it can also help reverse early tooth decay. When tooth enamel is weakened by acid, fluoride promotes a chemical reaction that replaces minerals, such as calcium and phosphate, to strengthen the enamel. This also makes it more resistant to future acid attacks.

(iv) do urself

hope it helps

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