Understanding Acidification through Carbon Dioxide

What is the initial pH level of the distilled water used in the experiment?

• pH 1

• pH 10

• pH 7

• pH 4

What is the purpose of using a universal indicator in the experiment?

• To show the pH level of the water

• To change the color of the water

• To measure temperature

• To indicate the presence of carbon dioxide

How is carbon dioxide produced in the experiment to simulate acid rain?

• By dissolving salt in water

• By heating water

• By mixing vinegar and baking soda

• By burning matches

What happens to the water's pH level after absorbing carbon dioxide?

• It becomes more alkaline

• It remains unchanged

• It becomes neutral

• It becomes acidic

What color does the water turn when it becomes acidic due to carbon dioxide?

• Green

• Blue

• Yellow or Red

• Purple