grade 12 acid &base

Scale that measures how acidic or basic something is.

• aH

• bH

• pH

• Hp

What gas forms when an acid reacts with a metal?

• O₂

• H₂

• H

• CO₂

Which pH is considered neutral?

• 1
• 3
• 7
• 14

What is the purpose of an "indicator"?

• changes color if a chemical reaction occurs

• changes color if a physical change occurs

• changes color in the presence of an acid or base

• changes color when a salt dissolves in water

The table shows the pH of several solutions. Which solution has the greatest concentration (amount) of H⁺ ions?

• vinegar

• milk

• water

• bleach

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

lemon juice is a

• acid

• base

acids taste

• bitter

• sour

• furry

bases taste

• bitter

• sour

• like candy