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प्रश्न
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
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उत्तर
Ice, water and water vapour look different and display different physical properties but they are chemically the same.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Boiling of water to form steam.
Fill in the blank.
An earthquake is a .................. change.
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
True or false
Is the process of digestion a physical change?
Name two reversible changes.
Which of the following are physical changes and which are chemical changes ?
Which of the following are physical changes and which are chemical changes ?
Rusting of iron
Differentiate between a physical change and a chemical change with reference to – Formation of products.
Match the following
| Sr. No. | A | B | C |
| 1. | Melting | Change of state from liquid to solid | Ticking of clock |
| 2. | Condensation | Change of state from liquid to gas | Formation of ice cube |
| 3. | Evaporation | Change of state from solid to liquid | Collecting flowers |
| 4. | Freezing | Change of state from gas to liquid | Ice cube to water |
| 5. | Periodic change | Occurs at irregular time intervals | Water to steam |
| 6. | Non-periodic change | Occurs at regular time intervals | Steam to water drops |
Keeping a stone in sunlight for few hours is ______.
