Chapters
Chapter 2: Physical and Chemical Changes
Exercise [Page 18]
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
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Concepts covered in Concise Chemistry Class 8 ICSE chapter 2 Physical and Chemical Changes are Classification as Physical and Chemical Change., Concept of Physical and Chemical Changes.
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