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Important Questions and Answers for Class 7 Science Chapter 5 Changes Around Us Physical And Chemical 2025-26

Q: 1. What are the most important question types in Class 7 Science Chapter 5 Changes Around Us Physical And Chemical?

Class 7 Science Chapter 5 usually includes MCQs, very short answers, short, long answers, and case-based questions. Focus on identifying whether a change is physical or chemical, giving examples, and drawing diagrams when asked. Practice consistently with important questions to improve familiarity and accuracy for exams.

Q: 2. How should I write answers to questions on physical and chemical changes for class 7 to get full marks?

For full marks, keep your answers clear and structured. Define the type of change (physical/chemical) directly.Give examples and features relevant to the question.Underline keywords like “irreversible,” “new substance formed,” etc.Add neat diagrams if required.

Q: 3. Which subtopics in physical and chemical changes class 7 have the highest exam weightage?

The high-weightage subtopics include: Differences between physical and chemical changesExamples from daily lifeReason-based questionsMCQs based on quick identificationDiagrams illustrating reversible and irreversible changesPractice these first for better scores.

Q: 4. Can I get important questions on physical and chemical changes class 7 as a worksheet with answers PDF?

Yes, you can get a worksheet on physical and chemical changes class 7 PDF with answers. These PDFs include important questions, short and long answers, and MCQs for thorough practice. Use these documents for daily revision and last-minute exam preparation to strengthen your understanding of the chapter.

Q: 6. What is the best way to practice physical and chemical changes class 7 MCQ with answers?

The best way to practice is by solving MCQs regularly from physical and chemical changes class 7 MCQ with answers pdf. Attempt timed quizzes for each topic.Check answers immediately and note mistakes.Revise wrong concepts for improvement.

Q: 7. How can I quickly revise all important questions and answers before the exam for Chapter 5?

To revise quickly, keep a physical and chemical changes class 7 extra questions pdf with you. Go through very short question answers for basics.Revise diagrams and definitions.Take a quick test from your worksheet.Focus on exam keywords and stepwise points to ensure all areas are covered.

Practice with physical and chemical changes class 7 questions with answers for Exam Preparation

Important Questions Class 7 Science Chapter 5 Changes Around Us Physical And Chemical help students understand the real types of changes in everyday life. This page gives clear explanations and answers using physical and chemical changes class 7 questions with answers. All key topic points are matched to actual school exam requirements for Class 7 Science.

These questions cover all important concepts in the chapter, from definitions to differences and real examples. You will also find worksheet on physical and chemical changes class 7 pdf for extra practice. Each answer follows CBSE standards and uses marking keywords to guide you on what examiners look for in answers.

Use these Vedantu Important Questions with Answers to make revision easy and focus on exam-style questions. Practicing these expected questions will help you prepare well and avoid common mistakes. Click to download the free Important Questions PDF for quick revision anytime.

Practice with physical and chemical changes class 7 questions with answers for Exam Preparation

1. Multiple choice questions.

Q1. Which of the following is a chemical change?

(a) Melting of ice
(b) Tearing of paper
(c) Burning of wood
(d) Folding clothes

Answer: (c) Burning of wood.

Q2. What is required along with fuel and oxygen for combustion to occur?

(a) Light
(b) Heat
(c) Water
(d) Iron

Answer: (b) Heat.

Q3. Which term describes changes where no new substance is formed?

(a) Physical changes
(b) Chemical changes
(c) Biological changes
(d) Atmospheric changes

Answer: (a) Physical changes.

Q4. What is the lowest temperature at which a substance catches fire called?

(a) Boiling point
(b) Melting point
(c) Dew point
(d) Ignition temperature

Answer: (d) Ignition temperature.

Q5. Which one is a reversible change?

(a) Cutting paper
(b) Burning candle
(c) Melting ice cubes
(d) Burning magnesium

Answer: (c) Melting ice cubes.

2. Very Short Answer (VSA).

Q1. Define a physical change with an example.

Answer: A physical change is when a substance changes its shape, size, or state, but no new substance is formed. Example: Melting of ice.

Q2. What do we call a substance that undergoes combustion?

Answer: A substance that undergoes combustion is called a combustible substance, like wood or kerosene.

Q3. Name one slow natural change mentioned in the chapter.

Answer: Weathering of rocks is a slow natural change where rocks break down to form soil over a long period.

Q4. What is a chemical change?

Answer: A chemical change is a process in which one or more new substances are formed due to a chemical reaction, such as rusting.

Q5. What do fireflies produce through a chemical change?

Answer: Fireflies produce light through a chemical change called bioluminescence.

3. Short Answer Questions.

Q1. Distinguish between physical and chemical changes. Give one example of each from everyday life.

Answer: In a physical change, only the appearance or state of a substance changes and no new substance is formed—for example, dissolving sugar in water. In a chemical change, new substances are created—for example, making curd from milk.

Q2. Explain why burning of a candle shows both physical and chemical changes.

Answer: When a candle burns, the wax melts (physical change), then solidifies after cooling. The wax vapours burn to give new substances like carbon dioxide (chemical change). So, both types of changes are seen during this process.

Q3. How can you show that carbon dioxide is formed when mixing baking soda and vinegar?

Answer: When vinegar is mixed with baking soda, bubbles are formed. Passing this gas through lime water turns it milky, showing the presence of carbon dioxide—a chemical change.

Q4. Why is rusting of iron considered a chemical change?

Answer: Rusting is a chemical change because iron reacts with water and oxygen to form a new substance called iron oxide or rust, which has different properties from iron.

Q5. Mention two conditions needed for combustion to happen.

Answer: For combustion, a combustible substance (fuel), oxygen, and heat to reach ignition temperature are needed. Absence of any of these stops combustion.

4. True or False Questions.

Q1. Mixing baking soda and water is a chemical change.

Answer: False.

Q2. Burning wood leads to the formation of new substances.

Answer: True.

Q3. Weathering of rocks involves only chemical changes.

Answer: False.

Q4. Physical changes can mostly be reversed.

Answer: True.

Q5. Rusting is a physical change.

Answer: False.

3. Fill in the Blanks Questions.

Q1. The lowest temperature at which a substance catches fire is called its ________.

Answer: ignition temperature.

Q2. A process in which one or more new substances are formed is called a ________ change.

Answer: chemical.

Q3. Crushing a piece of chalk is a ________ change.

Answer: physical.

Q4. The formation of compost from leaves is a ________ change.

Answer: chemical.

Q5. The turning of lime water milky proves the presence of ________ gas.

Answer: carbon dioxide.

How Changes Around Us Help Class 7 Students Understand Physical and Chemical Changes

Learning about physical and chemical changes is simple with easy questions and answers. These topics are core to class 7 worksheets and help in understanding daily events. Our resources include very short question answers, extra questions pdf, and MCQs with answers.

Prepare confidently for science tests using our physical and chemical changes class 7 worksheet with answers pdf. Practice questions on reversible and irreversible changes are explained clearly and step-by-step, making concepts easy and exam-friendly. These questions on physical and chemical changes for class 7 build strong basics.

Work on a variety of worksheets for class 7 science to understand changes around us. Our material includes sample MCQs and extra questions for revision. With support for physical and chemical changes class 7 mcq with answers pdf, learning is fun and stress-free for everyone.

FAQs on Important Questions and Answers for Class 7 Science Chapter 5 Changes Around Us Physical And Chemical 2025-26

1. What are the most important question types in Class 7 Science Chapter 5 Changes Around Us Physical And Chemical?

Class 7 Science Chapter 5 usually includes MCQs, very short answers, short, long answers, and case-based questions. Focus on identifying whether a change is physical or chemical, giving examples, and drawing diagrams when asked. Practice consistently with important questions to improve familiarity and accuracy for exams.

2. How should I write answers to questions on physical and chemical changes for class 7 to get full marks?

For full marks, keep your answers clear and structured.

Define the type of change (physical/chemical) directly.
Give examples and features relevant to the question.
Underline keywords like “irreversible,” “new substance formed,” etc.
Add neat diagrams if required.

3. Which subtopics in physical and chemical changes class 7 have the highest exam weightage?

The high-weightage subtopics include:

Differences between physical and chemical changes
Examples from daily life
Reason-based questions
MCQs based on quick identification
Diagrams illustrating reversible and irreversible changes

Practice these first for better scores.

4. Can I get important questions on physical and chemical changes class 7 as a worksheet with answers PDF?

Yes, you can get a worksheet on physical and chemical changes class 7 PDF with answers. These PDFs include important questions, short and long answers, and MCQs for thorough practice. Use these documents for daily revision and last-minute exam preparation to strengthen your understanding of the chapter.

5. Are diagrams compulsory in answers for important questions in Chapter 5 Changes Around Us?

Diagrams are needed only if the question specifically asks you to draw, label, or explain with a diagram. Neat diagrams and correct labels can secure more marks. For descriptive answers, focus on giving clear explanations unless a diagram is part of the question.

6. What is the best way to practice physical and chemical changes class 7 MCQ with answers?

The best way to practice is by solving MCQs regularly from physical and chemical changes class 7 MCQ with answers pdf.

Attempt timed quizzes for each topic.
Check answers immediately and note mistakes.
Revise wrong concepts for improvement.

7. How can I quickly revise all important questions and answers before the exam for Chapter 5?

To revise quickly, keep a physical and chemical changes class 7 extra questions pdf with you.

Go through very short question answers for basics.
Revise diagrams and definitions.
Take a quick test from your worksheet.

Focus on exam keywords and stepwise points to ensure all areas are covered.