pH scale

The pH scale is a range from:

0-14

A pH of 3 is how many times more acidic than a pH of 5?

100

Bleach is a strong base, what is the pH level of bleach?

13

A solution with a pH of 10 is mixed with a solution with a pH of 4. What would the pH of the mixture most likely be?

7

A(n) ______ is a substance with a pH less than 7

Acid

A(n) _______ is a substance with a pH greater than 7.

Base

In a test of pH levels, a baking soda has a pH of 9 and bleach has a pH of 12. What is true about there relationship?

Both of the solution are Bases

According to the pH range which substance is more acidic than lemon juice

Hydrochloric acid

An acid

Is a substance that releases H+ ions when dissolved in water

A base is a substance

That releases OH- ions when dissolved in water

What is the only substance with a neutral pH of 7?

Water

If you have a substance with a pH of 7.1 it is a(n).....

base

The picture below shows the relative concentrations of H+ and OH- in a solution. Is the solution an acid or a base?

base

On the pH scale higher numbers indicate

bases

Complete the sentence. A substance that is more basic has a _____ pH than a substance that is acidic.

higher

Water has a neutral because

it has an equal amount of H+ and OH- in solution

A solution has a pH of 7.0. What would happen to the pH if H ions were added?

pH would go down

A solution has a pH of 7.0. What would happen to the pH if OH ions were added?

pH would go up