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प्रश्न
Select the chemical changes from the following list of changes
The crystallisation of salt from its solution.
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उत्तर
The crystallisation of salt from its solution is a PHYSICAL change as only state changes (crystals are formed), the composition does not change, is reversible, no change in mass takes place.
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Rusting of almirah
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
Fill in the blank
change in which the substance can be brought back to its original state is called a ............... change.
Photosynthesis cannot take place at night.
True or false
Dissolving of a solid in liquid is a physical change.
Classify the following as physical or chemical change :
Growth of a plant
Fill in the blank.
The process of a liquid changing into a solid is called ________
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
You are given some candle wax. Can you make a candle doll from it? What kind of change is this?
Ice, water and water vapour look different and display different ______ properties but they are ______ the same.
