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प्रश्न
State whether the following is physical or chemical changes.
(energy produced) dissolving sugar in water —
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उत्तर
physical change,
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संबंधित प्रश्न
Tick the most appropriate answer.
4. Chemical changes involve
- change in shape.
- change in size.
- change in molecular composition.
- none of these
True or false
In a physical change no net energy change is involved.
Name two reversible changes.
What are man-made changes ?
Which of the following are physical changes and which are chemical changes ?
Fill in the blank.
There is no change in the _____________of the substance during a physical change.
Give four difference between physical and chemical changes.
Select the correct answer from the choice given below to complete the sentence
The energy required for completion of a physical change is ______________ when the change is reversed.
When a woolen yarn is knitted to get a sweater, the change can be classified as ____________.
Filling up a balloon with hot air is a _______ change.
