To move around more. bounce off walls ect. they are more energised
Answer:
A- a rigid solid
Explanation:
The Earths mantle is mainly made up of rock and rocks are rigid and are solid.
Answer:
pH of 4
Explanation:
Upon comparing a solution with a pH value of 4 and that having a pH of 7, you will realize that it has a pH difference of 3 although the concentration of ions of hydrogen having a pH of 7 is 1000 times greater than being at a pH of 4.