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प्रश्न
What kind of change is shown by tearing of paper?
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उत्तर
Tearing of paper is a physical change that cannot be reversed.
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संबंधित प्रश्न
Classify the following changes as physical or chemical: curdling of milk
Make a list of different types of changes with example.
Classify the following as physical or chemical changes :
Breaking of a glass tumbler
Give the main differences between physical changes and chemical changes.
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
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.
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
Do you think rust is different from iron?
The change of state of a substance from solid to liquid and liquid to gas is ______.
