What is ph?

Is a measure of how acids or basic the solutions is hydronium ions and hydroxide ions.

What are ph values ? Do this values depend on something? 

The ph is generally ranges from 0 -14 more acidic solutions have a very lower ph values a solutions which a ph values and a solutions which a ph - 0 is highly acidic.a solution that has a ph of seven is natural.others básicas solutions have a higher ph value.

Check chat 3.2 about acid and bases .what  can you say about it ?

Tha powerful are hydrochloric sulfuric nitric.

And powerful bases are sodium-potassium and  hydroxide .

What is neutralization ? Give examples

Is a type of quemical reaction in which a strong acid and strong base react which each other to form water and salt.

Example: heartsburns