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प्रश्न
Classify the following as physical or chemical properties
Metallic sodium is soft enough to be cut with a knife.
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उत्तर
Physical property
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संबंधित प्रश्न
Melting of solid (wax) is a physical change.
What role does energy play in initiating a chemical change ?
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
State whether the following is physical or chemical changes.
photosynthesis —
Write true or false
A natural change can also be a desirable change.
Photosynthesis cannot take place at night.
State the various conditions that favour the process of evaporation.
Fill in the blank.
The process of a liquid changing into a solid is called ________
Name the following:
The type of change physical or chemical involved – ‘when a substance undergoes a change in state, colour or size’.
Physical Change: Boiling::Chemical Change: ______.
