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Question
State which of the following pertain to – chemical changes.
- Substance retains its identity.
- The change is permanent.
- No new substance is formed.
- Is easily reversible.
- Produces one or more new substances by a change in its composition.
- The change is temporary.
- The composition and properties of the original substance are not altered.
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Solution
The following points pertain to chemical changes:
b. The change is permanent.
e. Produces one or more new substances by change in its composition.
The remaining points pertain to physical changes.
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