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प्रश्न
Select the correct answer from the choice given below to complete the sentence
A change in which a substance retains its identity is a
______ change.
पर्याय
physical
chemical
उत्तर
A change in which a substance retains its identity is a physical change.
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संबंधित प्रश्न
How do you say that the process of digestion is a chemical change ?
Write true or false
Earthquake is a desirable change.
True or false
Dissolving of a solid in liquid is a physical change.
Write true or false
Decomposition of leaves is a fast change.
Which of the following are physical changes and which are chemical changes?
Burning of candle wax, Melting of candle wax, Mixing of iron filings and sand, Burning of wood, Breaking a piece of chalk, Burning a piece of paper, Cutting a piece of paper.
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.
State whether the following statement is true or false. If false write the correct statement.
Melting of butter and wax are examples of chemical changes.
Give a reason why – Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible change.
Assertion: The explosion of fire cracker is a physical change.
Reason: A physical change is a reversible change.
Mention a few physical properties of a substance.
