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प्रश्न
Write true or false
Melting of ice is a physical change.
विकल्प
True
False
उत्तर
True
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संबंधित प्रश्न
Changes in which only ______ properties of a substance change are called physical changes.
Fill in the blank.
Heat is .................... by a gas during the process of condensation.
True or false
Dissolving of a solid in liquid is a physical change.
State one instance where water undergoes a physical change and one in which it undergoes a chemical change.
Give reasons why – separation of mixtures e.g. iron from a mixture of iron and sulphur is a physical change, but heating a mixture of iron and sulphur is considered a chemical change.
Change is the law of nature which occurs in everyday life.
State when a substance [i.e. matter] undergoes a kind of change.
Name the following.
A form of energy required for a chemical change.
What type of change is colouring of a paper?
Two drops of dilute sulphuric acid were added to 1 g of copper sulphate powder and then a small amount of hot water was added to dissolve it (step I). On cooling, beautiful blue coloured crystals got separated (step II). Step I and Step II are:
Explain the characteristics of physical change with examples.
