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प्रश्न
Fill in the blanks in the following statements using the words given in the box.
| rusted, colourful, substance, chemical, physical, reversible, iron oxide, object |
- Making sugar solution is a ______ change.
- A physical change is generally ______.
- Grinding of wheat grain changes its size. It is a ______ change.
- Iron benches kept in lawns and gardens get ______. It is a ______ change because a new ______ is formed.
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उत्तर
- Making sugar solution is a physical change.
- A physical change is generally reversible.
- Grinding of wheat grain changes its size. It is a physical change.
- Iron benches kept in lawns and gardens get rusted. It is a chemical change because a new substance is formed.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
A burning candle shows both physical and chemical changes. Explain ?
Write true or false
Rusting of iron is a chemical change.
Classify the following as a physical or a chemical change.
Drying of wet clothes
Change is the law of nature and occurs in our everyday life, at all times and in all places. Differentiate between the following change with a suitable example.
Desirable and undesirable change.
Differentiate between a physical change and a chemical change with reference to – Formation of products.
Give the reason why the following is considered as chemical changes.
An iron nail kept open in the atmosphere rusts.
In a solution of salt in water, water is the solute
Filling up a balloon with hot air is a _______ change.
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?
