7Ed Mixing a Rainbow

Soren Peter Sorensen designed the pH scale.

• True.

• False.

Some acids are stronger than others.

• True.

• False.

We can measure pH using a Tape Measure.

• True.

• False.

We can measure the pH using a pH meter or universal indicators.

• True.

• False.

Your skin has a pH of ............

• 1.5

• 5.5

• 7.5

• 10.5

Light green indicates what pH on the pH scale?

• 1

• 2

• 7

• 14

What type of substances does dark blue indicate on the pH scale.

• a strong acid.

• a weak acid.

• neutral.

• a strong alkali.

Checking the pH in the environment is very important.

• True.

• False.

Pollution can cause acid rain, or harm wildlife in local rivers.

• True.

• False.

What is the pH of your blood according to the pH scale?

• 2.

• 4.

• 7.5

• 10