Question

toothpaste are alkaline give reason

Answer 1

Answer:

Explanation:

The bacteria present in our mouth can change sugary food into acids. If the acid stays in our mouth for a long time, it attacks our teeth. This causes tooth decay. Toothpastes often contain weak alkalines in order to neutralize acids in the mouth.

Answer 2

Explanation:

Water is having pH of around 6–7. The bacteria present in the oral cavity ferments the carbohydrate and convert it into acid. Therefore we use alkaline toothpaste to neutralize the acid content.