ph 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

Tags

NGSS.MS-PS1-2

Which of these pH values would indicate that a solution is a weak base?

• 4
• 5.6
• 8
• 13

When dissolved in water, acids produce:

• bases
• salts
• hydrogen ions
• hydroxide ions

Tags

NGSS.MS-PS1-2

Buffer is defined as

• ability to resist pH change
• ability to prevent pH from decreasing
• ability to resist a pH increase
• ability to resist pH change when small amount of acid added

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.

Tags

NGSS.HS-LS1-3

What kind of acid does not completely dissociate?

• weak
• strong
• ionic
• pH