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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
Photosynthesis cannot take place at night.
Write true or false
Rusting of iron is a chemical change.
True or false
Change of seasons is a non-periodic change.
State one instance where water undergoes a physical change and one in which it undergoes a chemical change.
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.
Slow and fast change.
Give a reason why
Change of seasons is a periodic change while the change of weather is a non-periodic change.
Wood to sawdust:______:: Wood to Ash: Chemical change
Assertion: Burning of wood log to charcoal is a physical change.
Reason: The products formed of burning a piece of wood can be easily converted back to wood log.
Natural changes which take place in nature on their own, are beyond the control of human being.
Iron pipes coated with zinc do not get rusted easily.
