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प्रश्न
State why addition of sodium chloride to water is considered a physical change, while addition of dilute sulphuric acid to zinc is considered a chemical change.
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उत्तर
Addition of sodium chloride to water is considered a physical change because it does not form any new substance. but when the addition of dilute sulphuric acid is added to zinc. They forms zinc-sulphate hence it is considered as a chemical change.
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संबंधित प्रश्न
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Classify the following as chemical or physical change:
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Classify the changes involved in the following process as physical or chemical changes:
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State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Cutting a log of wood into pieces is a chemical change.
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lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
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- melting of iron metal
- rusting of iron metal
- bending of an iron rod
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Melting of wax
Classify the following as a physical or a chemical change.
Burning of coal
Classify the Following as a Physical Or a Chemical Change.
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