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प्रश्न
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
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उत्तर
A change, which alters the composition of a substances,iis known as a chemical change.
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संबंधित प्रश्न
Which of the following are chemical changes?
- Growth of a plant
- Rusting of iron
- Mixing of iron fillings and sand
- Cooking of food
- Digestion of food
- Freezing of water
- Burning of candle
Tick the most appropriate answer.
5. Photosynthesis requires
- heat energy.
- wind energy
- sunlight.
- sound energy
Write true or false for the statement
A natural change can also be a desirable change
Fill in the blank
Changes that occur in nature are called ______
Classify the Following as a Physical Or a Chemical Change.
Making of a Sugar Solution
Ammonium chloride is also a sublimable solid. Give a reason why the sublimation of ammonium chloride involves a physical and a chemical change.
Fill in the blank with the correct word of the statement given below:
Sublimation involves a __________ change.
Name the following:
The term involved in the change of state from – ‘water to ice’ – which is a physical change.
Name the following.
A form of energy required for a chemical change.
What kind of change is shown by tearing of paper?
