Answer:
4.62
Explanation:
Using the equation -log[H3O+] = pH,
-log(2.4 x 10^-5) = 4.62
the identity of element remains same
The properties of matter can best be explained using a model in which all materials are composed of tiny particles (atoms, molecules and ions). There is empty space between particles and particles are constantly moving (their speed is changed by temperature).