EASY
7th ICSE
IMPORTANT
Earn 100

Name the process in which heat is liberated during a change. (Endothermic process/ Exothermic process)

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Important Questions on Physical and Chemical Changes

MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Physical and Chemical Changes>EVALUATE YOUR UNDERSTANDING>Q I
During a chemical change, energy is either evolved or absorbed. In which form is this energy seen?
EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Physical and Chemical Changes>EVALUATE YOUR UNDERSTANDING>Q II
Define physical changes.
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Physical and Chemical Changes>EVALUATE YOUR UNDERSTANDING>Q II
Define chemical changes.
EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Physical and Chemical Changes>EVALUATE YOUR UNDERSTANDING>Q II
Define pasteurisation.
EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Physical and Chemical Changes>EVALUATE YOUR UNDERSTANDING>Q II
Define the term fermentation.
EASY
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Physical and Chemical Changes>EVALUATE YOUR UNDERSTANDING>Q II
Define the term endothermic changes.
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Physical and Chemical Changes>EVALUATE YOUR UNDERSTANDING>Q III
State whether rusting of iron is a physical or a chemical change? How can you prevent rusting of iron?
MEDIUM
7th ICSE
IMPORTANT
Innovative Chemistry>Chapter 2 - Physical and Chemical Changes>EVALUATE YOUR UNDERSTANDING>Q III
Is an earthquake a periodic or non-periodic change? Give reasons. Also mention some of the losses that occur due to earthquakes.