Exploring Substances: Acidic, Basic, and Neutral

Front

What event did the school host on 28 February?

Back

A science fair to celebrate National Science Day.

Front

What did Ashwin and Keerthi receive at the entry gate of the science fair?

Back

A white sheet of paper.

Front

What happened when a liquid was sprayed on the white sheets of paper?

Back

The words ‘Welcome to the Wonderful World of Science’ appeared.

Front

What is litmus used for?

Back

Litmus is used as an acid-base indicator.

Front

What color does blue litmus paper turn in acidic solutions?

Back

Red.

Front

What color does red litmus paper turn in basic solutions?

Back

Blue.

Front

What are the three groups of substances based on their effect on litmus paper?

Back

Group A (acidic), Group B (basic), Group C (neutral).

Front

What is the nature of substances in Group A?

Back

They turn blue litmus paper to red, indicating they are acidic.

Front

What is the nature of substances in Group B?

Back

They turn red litmus paper to blue, indicating they are basic.

Front

What is the nature of substances in Group C?

Back

They do not change the color of either litmus paper, indicating they are neutral.