GCSE Acids and Bases

What is the pH scale used to measure?

• The color of a solution

• How acidic or alkaline a solution is

• The temperature of a solution

• The weight of a solution

What pH value is considered neutral?

• 0

• 14

• 7

• 10

What is the pH of stomach acid?

• Around 2

• Around 12

• Around 7

• Around 9

Which of the following is a way to measure pH?

• Using a thermometer

• Using a pH probe and meter

• Using a ruler

• Using a stopwatch

What ions do acids release in water?

• OH- ions

• Na+ ions

• Cl- ions

• H+ ions

What is the result of a neutralization reaction?

• Sugar and spice

• Water and carbon dioxide

• Salt and water

• Salt and sugar

What is an alkali?

• A base that is insoluble in water

• A solid form of hydrogen

• A base that dissolves in water

• An acid that dissolves in water

Which of the following is a common acid mentioned?

• Hydrochloric acid

• Calcium carbonate

• Sodium chloride

• Sodium hydroxide