Changes Around Us | Class 7 Science Notes
By ConceptScroll Team · Published on 17 July 2026 · 2 min read
Changes Around Us – this guide gives you a concise, exam-ready overview of Changes Around Us from Class 7 Science, written by ConceptScroll editors and reviewed against the latest NCERT textbook.
Introduction
The chapter 'Changes Around Us' introduces students to the concept of changes occurring in the environment and in materials around us. Change is a continuous process and can be observed in daily life. These changes can be physical or chemical, reversible or irreversible. Physical changes are those that do not alter the identity of the substance, such as melting, freezing, or breaking. Chemical changes result in the formation of new substances with different properties, such as burning or rusting. Understanding these changes helps us comprehend natural phenomena and the properties of materials. The chapter emphasizes observing changes carefully and classifying them based on their characteristics. It also introduces the idea that some changes can be reversed by applying suitable methods, while others cannot be reversed. This foundational knowledge is essential for further studies in science, especially in understanding matter and its transformations.
📊 Diagram: The introductory section includes a diagram showing examples of changes such as ice melting into water, water boiling into steam, and paper burning, illustrating physical and chemical changes.
🧪 Activity: Observation activity where students note down changes they see around them daily and classify them as physical or chemical.
🔗 Connection: This introduction sets the stage for the next section, which discusses physical changes in detail.
Frequently asked questions
Which of the following is an example of a physical change?
Melting of ice
What is a chemical change? Give one example from daily life.
A chemical change is a change in which one or more new substances with different properties are formed. For example, burning of wood is a chemical change because it produces ash, carbon dioxide, and water vapor which are different from wood.
Which of the following changes is irreversible?
Burning of paper
Explain why melting of ice is considered a physical change.
Melting of ice is a physical change because it involves a change in state from solid to liquid without changing the chemical composition of water. The water molecules remain the same, only their arrangement changes.
Ready to ace this chapter?
Get the full Changes Around Us chapter — interactive notes, diagrams, worked solutions, polls and a free practice quiz — in the ConceptScroll app.
Study smarter with ConceptScroll
Daily NCERT-aligned reels, AI doubt solving and chapter quizzes — all free.
Start learning freeContinue reading
- पृथ्वी, चंद्रमा एवं सूर्य | Class 7 Science Notes
Clear NCERT-aligned notes on पृथ्वी, चंद्रमा एवं सूर्य for Class 7 Science.
- पृथ्वी, चंद्रमा एवं सूर्य | Class 7 Science Notes
Clear NCERT-aligned notes on पृथ्वी, चंद्रमा एवं सूर्य for Class 7 Science.
- पृथ्वी, चंद्रमा एवं सूर्य | Class 7 Science Notes
Clear NCERT-aligned notes on पृथ्वी, चंद्रमा एवं सूर्य for Class 7 Science.