Ocean's acid-base balance

Stronger acids have a pH closer to...

• 7

• 4

• 9

Weaker bases have a pH closer to...

• 8

• 14

• 0

• 4

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

• pure water

• milk

• bleach

• orange juice

Which of the following is true about acids and bases?

• The lower the pH #, the stronger the acid

• the higher the pH #, the stronger the acid

• The lower the pH #, the more neutral the acid

• The higher the pH #, the weaker the base

Ranging from 0 to 14, a pH value indicates how acidic or basic a solution is. Which of these pH values would be a strong acid?

• 9

• 6

• 13

• 2

Tags

NGSS.MS-PS1-2

True or false: a neutral solution has equal amounts of H⁺ and OH^-.

• true

• false

The acidity or alkalinity of a solution is measured in terms of the

• PH meter

• PH calculator

• PH scale

PH scale

• measures the concentration of hydrogen ions in a solution

• measures the concentration of hydroxide ions in a solution

• measures the concentration of salt ions in a solution

Each pH unit requires ............. fold in the amount of hydrogen ions.

• ax10

• a/10

• ax2

n water solutions CO2 is present in many forms

• carbonic acid

• bicarbonate

• carbon dioxide

• A and B

Tags

NGSS.MS-PS1-1