Cabbage Juice pH Indicator Experiment

The video tutorial demonstrates an experiment using red cabbage as a natural acid-base indicator. The process involves blending or boiling cabbage to extract a purple juice, which serves as the indicator. Various household items are tested to observe color changes, indicating their acidic or basic nature. The experiment is simple and can be replicated at home, offering a visual understanding of pH levels.

What is the main purpose of using red cabbage in the experiment?

• To make a smoothie

• To act as an acid-base indicator

• To add color to the experiment

• To test its nutritional value

What color does the cabbage juice turn when it acts as a neutral indicator?

• Pink

• Green

• Blue

• Yellow

What is the suggested alternative if a blender is not available for the experiment?

• Chop the cabbage finely

• Use a juicer

• Boil the cabbage

• Use a food processor

What happens to the cabbage juice when lemon juice is added?

• It turns yellow

• It remains blue

• It turns pink

• It turns green

Which household item was found to be basic during the experiment?

• Lemon

• Club soda

• Windex

• Egg whites

What is the color change observed when club soda is added to the cabbage juice?

• It turns blue

• It turns green

• It remains purple

• It turns pink

What is the role of egg whites in the experiment?

• They act as an acidic substance

• They act as a basic substance

• They act as a neutral substance

• They do not change the color

What is the significance of the spectrum created in the experiment?

• It shows the nutritional value of items

• It measures the density of liquids

• It indicates the temperature of substances

• It displays the pH levels of different substances

What is the main educational takeaway from the experiment?

• Understanding the nutritional value of cabbage

• Learning how to make a smoothie

• Learning about different household items

• Identifying acidic and basic substances

What is encouraged at the end of the experiment?

• To write a report on the experiment

• To conduct the experiment at home with various items

• To visit a science museum

• To try the experiment with different vegetables