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प्रश्न
Fill in the blank with the appropriate word of the statement given below:
Germination of seeds is considered a __________ change.
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उत्तर
Germination of seeds is considered a chemical change.
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संबंधित प्रश्न
Classify the changes involved in the following process as physical or chemical changes:
Photosynthesis
Make a list of different types of changes with example.
What do you observe when :
lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
Fill in the blank
Revolution of the earth around the sun is a ________ change.
State whether the following is physical or chemical changes.
respiration in living beings —
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.
Potassium chloride is added to water and stirred. A salt solution is obtained, which is then boiled, leaving behind a residue.
- Is the above change physical or chemical?
- Name the residue which remains behind after the salt solution is boiled.
- Is the change reversible or not reversible?
- Are the composition and properties of the original substance altered?
- Give a reason why the above experimentation would not be possible if calcium carbonate was taken in place of potassium chloride.
Select the chemical changes from the following list of changes
Change of seasons
Give an example of a physical change in which the color of the substance changes.
