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Question
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
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Solution
Physical change
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RELATED QUESTIONS
Fill in the blank.
An earthquake is a .................. change.
Match the columns
| column A | coulmn B |
| 1. A change which cannot be easily reversed | a. man-made change |
| 2.A change that repeats itself at regular intervals | b. chemical change |
| 3. A change that is made by humans | c. physical change |
|
4. A change in which the original substance cannot be obtained |
d. periodic change |
| 5. A change where no new substance is formade | e. irreversible change |
| f. slow change |
Classify the following changes as physical or chemical:-boiling
Classify the following as a physical or a chemical change.
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Classify the following as a physical or a chemical change.
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Given reason:
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What will you take into account while identifying the following?
A chemical change in a substance.
State which of the following pertain to – chemical changes.
- Substance retains its identity.
- The change is permanent.
- No new substance is formed.
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Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
