Biology pH review

pH is measured on a scale from

• 0-7

• 5-10

• 0-14

• 7-14

An acidic solution has a

• higher concentration of hydrogen ions than hydroxide ions

• higher concentration of hydroxide ions than hydrogen ions

• equal concentration of hydrogen ions and hydroxide ions

 Which of the following is an acid?

• shampoo
• baking soda
• orange juice
• water

The pH of a solution is tested, and it is found to be a basic solution. Of the following choices, what could the pH have been?

• 3
• 9
• 7
• 5

Pure water has a pH of 7. Pure water _______.

• is a base
• is a neutral substance
• could be either an acid or a base
• is an acid

Which is the stronger acid?

• pH 1
• pH 4
• pH 8
• pH 13