Question

Write all chemical equations in :-

(1) Chemical Recations and Equations.

(2)Acids ,Base and salt.

(3) Metals and Non-Metals.

There are total 110 equations in all these three chapters..
I am in class10..

plzzz answer fast​

Answer 1

Question 4

Why does tooth decay start when the pH of mouth is lower than 5.5?

Solution 4

Tooth decay start when the pH of mouth is lower than 5.5 because the acid becomes strong enough to attack the enamel of the teeth and corrode it.

Question 5

What is the pH of a neutral solution?

Solution 5

7