MEDIUM
7th ICSE
IMPORTANT
Earn 100

When we add water to the following substances. Which one will show a chemical change? 

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Important Questions on Physical and Chemical Changes

MEDIUM
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 2 - Physical and Chemical Changes>EXERCISE>Q 1
Define a physical change.
MEDIUM
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 2 - Physical and Chemical Changes>EXERCISE>Q 1
Define a chemical change.
MEDIUM
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 2 - Physical and Chemical Changes>EXERCISE>Q 1
Give two examples of physical and chemical change.
MEDIUM
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 2 - Physical and Chemical Changes>EXERCISE>Q 2
What are reversible and irreversible changes? Give one example for each.
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 2 - Physical and Chemical Changes>EXERCISE>Q 3
Mention a change that is always desirable.
EASY
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 2 - Physical and Chemical Changes>EXERCISE>Q 3
Mention a change that is always undesirable.
MEDIUM
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 2 - Physical and Chemical Changes>EXERCISE>Q 3
Mention a change that is always periodic.
MEDIUM
7th ICSE
IMPORTANT
Concise Chemistry Middle School for Class 7>Chapter 2 - Physical and Chemical Changes>EXERCISE>Q 4
Is burning a physical change or a chemical change? Why?