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प्रश्न
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
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उत्तर
If a change is permanent and irreversible it is considered a chemical change.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Melting of butter in a pan
Classify the following as chemical or physical change:
Dissolving common salt in water.
State whether the following is physical or chemical changes.
photosynthesis —
Write true or false
Melting of ice is a physical change.
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Compare the energy changes involved during a physical and a chemical change.
Select the chemical changes from the following list of changes
Butter turning rancid
A change in which matter undergoes a change but the total mass of the substance is unaltered is a ______ change.
Give the reason why the following is considered as chemical changes.
Sulphur when burnt in air evolves a gaseous acidic product.
Give an example to justify the statement that physical changes can be reversible as well as irreversible.
