# NCERT Class 7 Science Chapter 2 Exploring Substances: Acidic, Basic, and Neutral Solutions: In-Text and Exercise Questions Explained | SwaVid

The chapter "Exploring Substances: Acidic, Basic, and Neutral" introduces students to the fundamental properties of different substances based on their...

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# Exploring Substances: Acidic, Basic, and Neutral

## Find the gaps before this chapter finds them for you.

## Related chapters

Chapter 2 · Class 7 Science

The chapter "Exploring Substances: Acidic, Basic, and Neutral" introduces students to the fundamental properties of different substances based on their acidic, basic, or neutral nature. It covers the use of various indicators like litmus, turmeric, and China rose to identify these substances. A key concept explored is neutralisation, a reaction between an acid and a base, and its significance in daily life, including treating indigestion, ant stings, and soil conditions. This chapter helps students understand how to classify common substances and appreciate the practical applications of acid-base chemistry.

Your study route

In-text Questions

Answer: Indicators are special substances used to test whether a substance is acidic or basic by changing their colour. Three natural indicators are litmus, turmeric, and China rose (Hibiscus petals).

Exercise Questions

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Source

- Define indicators as substances that change colour to show if another substance is acidic or basic.
- List three commonly known natural indicators.
- NCERT Class 7 Science textbook: Curiosity : Chapter 2: Exploring Substances: Acidic, Basic, and Neutral

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- [NCERT Class 7 Science textbook: Curiosity](https://ncert.nic.in/textbook.php)