pH Indicators Text

What makes the kettle described in the passage 'magic'?

• It can pour any color on command.

• It can boil water instantly.

• It can change its shape.

• It can float in the air.

What is the purpose of the indicator in the experiments?

• To show whether a chemical is an acid, base, or neutral.

• To change the temperature of the solution.

• To make the solution glow in the dark.

• To speed up the reaction.

What color does the indicator turn when an acid is added?

• Red

• Blue

• Green

• Yellow

What household item is used to make the acid-base indicator?

• Red cabbage

• Lemon

• Baking soda

• Vinegar

What happens to the cabbage leaves when making the indicator?

• They lose their color and become almost white.

• They dissolve completely.

• They turn bright red.

• They become larger.

What is the role of vinegar in the magic trick?

• It acts as an acid to change the indicator color to red.

• It acts as a base to change the indicator color to blue.

• It is used to clean the glass.

• It is used to boil the water.

What safety precaution is mentioned when using bleach in the experiments?

• Work with an adult.

• Wear gloves.

• Use a mask.

• Do it outside.