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Question
Select the correct answer from the choice given below to complete the sentence
A change in which a substance retains its identity is a
______ change.
Options
physical
chemical
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Solution
A change in which a substance retains its identity is a physical change.
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RELATED QUESTIONS
Solve this crossword by using the clues that follow.
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1. It is the change that takes place in case of swinging pendulum of a clock.
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change
Write true or false
Burning of paper and formation of curd are reversible changes.
Make a list of different types of changes with example.
Define a chemical change. Give two examples of the above changes.
Fill in the blank with the appropriate word of the statement given below:
If a change is permanent and irreversible it is considered a _________ change.
Match the examples of changes in List I with the correct.
| List I | List II |
| 1. Expansion of a steel rod on heating | A: Physical change |
| 2. Rotting of eggs | B: Chemical change |
| 3. Milk turning sour | |
| 4. Tarnishing of copper | |
| 5. Separation of naphthalene from a mixture of naphthalene and sodium chloride. |
Select the chemical changes from the following list of changes
Butter turning rancid
Select the correct answer from the choice given below to complete the sentence
The matter is added or removed during a ____________ change.
Name the following.
The product obtained during a physical change when water converts from a liquid into a solid.
Higher order Thinking question
Boiling of water is a physical change; but boiling of egg is a chemical change. Why?
