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प्रश्न
State four differences between physical and chemical changes.
उत्तर
| Physical change | Chemical change |
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
What are reversible and irreversible changes ? Give one example for each.
Fill in the blank.
When a candle burns, wax melts. Melting of wax is a ________ change.
Write true or false
Earthquake is a desirable change.
Fill in the blank
Changes that occur in nature are called ______
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
What is a chemical change ? Give two examples of chemical changes.
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
