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प्रश्न
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
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उत्तर
A change, which alters the composition of a substances,iis known as a chemical change.
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संबंधित प्रश्न
Melting of solid (wax) is a physical change.
Classify the following changes as physical or chemical:- melting of a solid (wax)
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
True or false
In a physical change no net energy change is involved.
Tick the most appropriate answer.
Photosynthesis requires
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
Tearing of sheet of paper into pieces is ______ By the process of Heating of water, change.
State whether the following statement is true or false:
Stretching of rubber bands is not a physical change.
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
