The pH Scale and Buffers

An acid has a pH

• higher than 7

• lower than 7

• 7

• greater than 14

the H in pH stands for

• hood

• happy

• hydrogen

• help

a base has a pH of

• lower than 7

• higher than 7

• 7

• it only has a pOH

the more H+ ions the

• stronger the acid

• weaker the acid

• it neutralizes

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

What might happen if buffers did not exist within the human body?

• Our blood and other bodily fluids might become too acidic or basic.

• Our stomach acid would not be able to break down food.

• We would not be able to process glucose within our cells.

• We would not be able to inhale oxygen into our lungs.

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

• Both of the solution are Acids

• The Baking soda is an acid and the Bleach is a base

• The baking soda is a base and the Bleach is an Acid.

A solution with a pH of 8.6 would be...

• Acid
• Base
• Neutral
• Acid and Base

What does pH measure?

• the amount of hydrogen (H⁺) ions

• the amount of hydroxide (OH^-) ions

• amount of water

• all of the above

A solution with a pH of 7.0 would be...

• Acid
• Base
• Neutral
• Acid and Base