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Question
State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook.
Cutting a log of wood into pieces is a chemical change.
State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook.
Cutting a log of wood into pieces is a chemical change.
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Solution
The correct option is B False
Chemical change
- A substance is said to undergo a chemical change when the chemical properties of a substance alter. As a result, there is either formation or breaking of atomic bonds at the molecular level.
Physical change
- A substance is said to undergo a physical change when only the physical properties such as the shape, size, color, state, or appearance of the substance change. Its chemical composition remains intact.
- Cutting a log of wood into pieces is a physical change as the log is just broken down into smaller pieces, i.e the physical property is changed.
Hence the given statement is false.
Correct statement
Cutting a log of wood into pieces is a physical change.
Chemical change
- A substance is said to undergo a chemical change when the chemical properties of a substance alter. As a result, there is either formation or breaking of atomic bonds at the molecular level.
Physical change
- A substance is said to undergo a physical change when only the physical properties such as the shape, size, color, state, or appearance of the substance change. Its chemical composition remains intact.
- Cutting a log of wood into pieces is a physical change as the log is just broken down into smaller pieces, i.e the physical property is changed.
Hence the given statement is false.
Correct statement
Cutting a log of wood into pieces is a physical change.
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