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प्रश्न
State whether the following is physical or chemical changes.
heating a mixture of iron filings and sulphur—
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उत्तर
chemical change.
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संबंधित प्रश्न
A physical change is temporary. Explain.
How do you say that the process of digestion is a chemical change ?
Define physical change. Give two examples for the above changes.
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
Tick (√) the correct alternative from the choice given for the following statement
Which one of the following is volatile in nature ?
True or false
In a physical change no net energy change is involved.
Tick the most appropriate answer.
Physical changes are
Change is the law of nature which occurs in everyday life.
State when a substance [i.e. matter] undergoes a kind of change.
State which of the following terms connected with change of state of matter i.e.
(a) Melting
(b) Vaporisation
(c) Condensation
(d) Freezing
pertain to –
- Conversion of a liquid into a vapour or gas.
- Conversion of a liquid into a solid.
- Conversion of a solid into a liquid on heating.
Keeping a stone in sunlight for few hours is ______.
