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प्रश्न
Classify the following as a physical or a chemical change.
Butter getting rancid
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उत्तर
Chemical change
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Melting of butter in a pan
Tick (√) the correct alternative from the choice given for the following statement
A pop sound is heard when a lighted match stick is brought near the mouth of a jar. This indicates the release of gas.
Write true or false
Decomposition of leaves is a fast change.
Differentiate between a physical change and a chemical change with reference to – Formation of products.
Give four reasons why the burning of a magnesium ribbon in the air is considered a chemical change.
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 |
What type of change is colouring of a paper?
Water is the universal solvent. Why?
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
Which of the following is a physical change?
