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प्रश्न
Filling up a balloon with hot air is a _______ change.
उत्तर
Filling up a balloon with hot air is a
physical change.
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संबंधित प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
Write true or false for the statement
Decomposition of leaves is a fast change.
Fill in the blank
Revolution of the earth around the sun is a ________ change.
Write true or false
Burning of paper and formation of curd are reversible changes.
A physical change is temporary. Explain.
Classify the following as a physical or a chemical change.
Melting of wax
State the observations seen, when milk in a dish is kept aside for a few hours or more. Is the change which occurs – a physical change or a chemical change. Give reasons.
Select the chemical changes from the following list of changes
Breaking of glass
______ is the substance that is dissolved in a solvent.
Give two examples for each of the following cases:
Physical changes which are not reversible.
