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प्रश्न
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
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उत्तर
Ice, water and water vapour look different and display different physical properties but they are chemically the same.
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संबंधित प्रश्न
Fill in the blank.
A new substance is formed in a ............... change.
Chemical changes are accompanied by changes in energy.
State whether the following is physical or chemical changes.
burning of sugar —
State whether the following is physical or chemical changes.
growing of a piglet into a pig —
Tick the most appropriate answer.
Physical changes are
Classify the following as a physical or a chemical change.
Melting of wax
Change is the law of nature and occurs in our everyday life, at all times and in all places. Differentiate between the following change with a suitable example.
Desirable and undesirable change.
Ice kept in a beaker, slowly melts and turns into water. The water in the beaker on solidification is freezing turns back to ice. Give four reasons why the change from ice to water and water back to ice is considered a physical change.
Name the following.
A form of energy required for a chemical change.
Water is the universal solvent. Why?
