Chapters
Chapter 2: Physical and Chemical Changes
Selina solutions for Concise Chemistry Class 8 ICSE Chapter 2 Physical and Chemical Changes Exercise [Page 18]
Define physical change. Give two examples for the above changes.
Define a chemical change. Give two examples of the above changes.
Classify the following as a physical or a chemical change.
Drying of wet clothes
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
Classify the following as a physical or a chemical change.
Butter getting rancid
Classify the following as a physical or a chemical change.
Boiling of water
Classify the following as a physical or a chemical change.
Burning of paper
Classify the following as a physical or a chemical change.
Melting of wax
Classify the following as a physical or a chemical change.
Burning of coal
Classify the Following as a Physical Or a Chemical Change.
Formation of Clouds
Classify the Following as a Physical Or a Chemical Change.
Making of a Sugar Solution
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
Classify the Following as a Physical Or a Chemical Change.
Curdling of Milk
Fill in the blank.
The process of a liquid changing into a solid is called ________
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Fill in the blank.
The reaction in which energy is evolved is called
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
A burning candle shows both physical and chemical changes. Explain ?
Given reason:
Burning of paper is a chemical change.
Given reason:
Cutting of a cloth piece is a physical change, though it cannot be reversed.
Give four difference between physical and chemical changes.
Chapter 2: Physical and Chemical Changes
Selina solutions for Concise Chemistry Class 8 ICSE chapter 2 - Physical and Chemical Changes
Selina solutions for Concise Chemistry Class 8 ICSE chapter 2 (Physical and Chemical Changes) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CISCE Concise Chemistry Class 8 ICSE solutions in a manner that help students grasp basic concepts better and faster.
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Concepts covered in Concise Chemistry Class 8 ICSE chapter 2 Physical and Chemical Changes are Classification of Change: Physical Changes, Classification of Change: Chemical Changes, Change, Classification of Change: Slow and Fast Changes, Classification of Change: Natural and Man-made Changes, Classification of Change: Periodic and Non-periodic Changes, Classification of Change: Reversible and Irreversible Changes.
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