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प्रश्न
Classify the following as a physical or a chemical change.
Manufacture of salt from sea water
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उत्तर
Physical change
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संबंधित प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
When a candle burns, both physical and chemical changes take place. Identify these changes. Give another example of a familiar process in which both the chemical and physical changes take place.
Fill in the blank
change in which the substance can be brought back to its original state is called a ............... change.
Classify the following as a physical or a chemical change.
Burning of paper
What will you take into account while identifying the following?
A chemical change in a substance.
Give reasons why – separation of mixtures e.g. iron from a mixture of iron and sulphur is a physical change, but heating a mixture of iron and sulphur is considered a chemical change.
Name the following:
The final product of the physical change involved during the ‘melting of a piece of wax’.
Water is known as a universal solvent. Why?
State whether the following statement is true or false:
Anaerobic bacteria digest animal waste and produce biogas.
Adding sugar to milk is a physical change.
