Class 7 Exam  >  Class 7 Notes  >  Science Class 7  >  Mindmap: Physical and Chemical Change

Mindmap: Physical and Chemical Change | Science Class 7 PDF Download

Mindmap: Physical and Chemical Change | Science Class 7

The document Mindmap: Physical and Chemical Change | Science Class 7 is a part of the Class 7 Course Science Class 7.
All you need of Class 7 at this link: Class 7
111 videos|246 docs|28 tests

Top Courses for Class 7

FAQs on Mindmap: Physical and Chemical Change - Science Class 7

1. What is the difference between a physical and chemical change?
Ans. In a physical change, the substance's chemical composition remains the same, but its physical properties may change. In a chemical change, the substance undergoes a chemical reaction, resulting in a new substance with different chemical properties.
2. Can you provide examples of physical changes?
Ans. Examples of physical changes include melting ice, boiling water, crushing a can, and cutting paper. In all these examples, the chemical composition of the substances remains the same even though their physical appearance changes.
3. How can you differentiate between a physical and chemical change?
Ans. One way to differentiate between a physical and chemical change is to observe if a new substance is formed. If a new substance with different chemical properties is formed, it is a chemical change. If the substance retains its chemical composition, it is a physical change.
4. What are some indicators of a chemical change taking place?
Ans. Some indicators of a chemical change include the production of gas, formation of a precipitate, change in color, release of heat or light, and changes in odor. These changes indicate that a chemical reaction is occurring.
5. Is cooking an egg an example of a physical or chemical change?
Ans. Cooking an egg is an example of a chemical change. When an egg is cooked, the proteins in the egg denature and coagulate, resulting in a new substance with different chemical properties than a raw egg.
111 videos|246 docs|28 tests
Download as PDF
Explore Courses for Class 7 exam

Top Courses for Class 7

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

Semester Notes

,

Summary

,

Important questions

,

mock tests for examination

,

MCQs

,

Previous Year Questions with Solutions

,

Free

,

Extra Questions

,

past year papers

,

Mindmap: Physical and Chemical Change | Science Class 7

,

pdf

,

shortcuts and tricks

,

Sample Paper

,

study material

,

Mindmap: Physical and Chemical Change | Science Class 7

,

Viva Questions

,

Exam

,

Objective type Questions

,

ppt

,

video lectures

,

Mindmap: Physical and Chemical Change | Science Class 7

,

practice quizzes

;