Acids, Bases, pH

pH stands for:

• Potency of hydrogen

• Plurality of hydrogen

• Potential of hydrogen

• Pleurisy of hydrogen

What are properties of acids?

• Bitter, slippery, ph above 7

• Sour, reacts with metals, ph below 7

• Sour, reacts with metals, ph above 7

• Bitter, ph of 7, does not react with metals

If a substance has a pH of 7, it would be best describe as a _______ substance.

• basic

• neutral

• acidic and a basic

• acidic

Milk is a very weak acid. What might its pH value be?

• 6.5

• 7.8

• 4.2

• 12.2

Human blood has a pH between 7.35 and 7.45. Which of the following best describes human blood?

• strongly acidic

• slightly acidic

• strongly basic

• slightly basic

NaOH may be found in drain cleaners and as a component of soaps. Is NaOH an acid or a base?

• Acid

• Base

• Neither (Neutral)

Which one of these would be considered the weakest base?

• 8

• 7.8

• 11.6

• 14

Pure water has a pH of 7. This is considered to be:

• Neutral

• Acidic

• Basic

• None of the above

pH 5 is considered to be a:

• weak base

• strong base

• weak acid

• strong acid

When blue litmus paper turns red...

• you are testing a base

• you are testing a neutral

• you are testing an acid