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प्रश्न
What is a physical change ? Give two examples of physical changes.
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उत्तर
Physical change: These are changes in which no new substances are formed. These are temporary changes, which are easily reversible. The substance, which is involved in a physical change, does not lose its identity.
Examples:
- Water, if boiled, can be cooled and condensed.
- Mixing of iron fillings with sand is a physical change because they can be separated by a magnet.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Cutting of trees
Fill in the blank.
Changes that occur in nature are called ........................
What are reversible and irreversible changes ? Give one example for each.
Write true or false
Burning of sugar is a temporary change.
Classify the Following as a Physical Or a Chemical Change.
Formation of Clouds
Classify the Following as a Physical Or a Chemical Change.
Making of a Sugar Solution
Given reason:
Freezing of water to ice and evaporation of water are physical changes.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
Filling up a balloon with hot air is a _______ change.
Adding sugar to milk is a physical change.
