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प्रश्न
Differentiate between a physical change and a chemical change with reference to – Formation of products.
उत्तर
| Physical change | Chemical change |
| No new products are formed. | New products are formed. |
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संबंधित प्रश्न
State whether the following is physical or chemical changes.
mixing oil with water —
True or false
In a physical change no net energy change is involved.
Which of the following are chemical changes ?
- decaying of wood
- burning of wood
- sawing of wood
- hammering of nail into wood
Classify the following as a physical or a chemical change.
Boiling of water
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.
Select the chemical changes from the following list of changes
Respiration in mammals.
Select the chemical changes from the following list of changes
Change of seasons
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
Distinguish physical and chemical changes.
Classify the following as physical or chemical properties
The composition of a sample of steel is 98% iron, 1.5% carbon and 0.5% other elements.
