S2 Chemistry - pH Scale

What does the pH scale measure?

• The temperature of a solution

• The concentration of hydrogen ions in a solution

• The color of a solution

• The volume of a solution

Which of the following has a pH greater than 7?

• Vinegar

• Lemon juice

• Soap solution

• Hydrochloric acid

What is an acidic solution characterized by?

• A pH greater than 7

• A pH equal to 7

• A pH less than 7

• A pH of 14

Which substance will increase the pH of a solution?

• Lemon juice

• Vinegar

• Baking soda

• Hydrochloric acid

What does adding an acid to water do to the pH?

• Increases it

• Decreases it

• Has no effect

• Makes it neutral

What is the pH of pure water?

• 0

• 5

• 7

• 1

What is the purpose of using a pH indicator?

• To change the color of the solution

• To increase the pH

• To measure the temperature

• To measure the concentration of ions

How can the pH of a solution be decreased?

• By adding a base

• By adding an acid

• By adding more water

• By heating the solution

Which of the following is used to neutralize acids in the body?

• Antacids

• Antibiotics

• Enzymes

• Vitamins

What is the pH of most household cleaning products?

• Acidic

• Neutral

• Alkaline

• No pH