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Question
True or false
Is melting of ice a reversible change?
Options
True
False
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Solution
True
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RELATED QUESTIONS
Tick the most appropriate answer.
4. Chemical changes involve
- change in shape.
- change in size.
- change in molecular composition.
- none of these
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
Write short answer.
Give two examples of periodic changes
Define physical change. Give two examples for the above changes.
State whether the following is physical or chemical changes.
cutting wood into small pieces —
True or false
Change of seasons is a non-periodic change.
Match the columns.
| Column A | Column B |
| 1. a change which cannot be easily reversed | a. man-made change |
| 2 a change that repeats itself at regular intervals | b. chemical chang |
| 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 formed | e. irreversible change |
| f . slow change |
State which of the following terms connected with change of state of matter i.e.
(a) Melting
(b) Vaporisation
(c) Condensation
(d) Freezing
pertain to –
- Conversion of a liquid into a vapour or gas.
- Conversion of a liquid into a solid.
- Conversion of a solid into a liquid on heating.
Gas exists in three states as solid, liquid, and gas.
State whether the following statement is true or false:
Stretching of rubber bands is not a physical change.
