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Question
Give two examples for the following case:
Physical changes which are reversible
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Solution
- Folding of paper
- Melting of ice
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RELATED QUESTIONS
Classify the following as chemical or physical change:
Making a fruit salad with raw fruits
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 |
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Given reason:
Freezing of water to ice and evaporation of water are physical changes.
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
Fill in the blanks with the appropriate words of the statement given below:
Heating a piece of iron is considered a __________ change while heating a piece of coal [carbon] is considered a ___________ change.
Select the chemical changes from the following list of changes
The occurrence of lightning.
Select the chemical changes from the following list of changes
Butter turning rancid
Give the reason why the following is considered as chemical changes.
A bright light is seen evolved when a strip of magnesium is heated.
Which of the following is a physical change?
