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प्रश्न
Select the chemical changes from the following list of changes
Breaking of glass
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उत्तर
Breaking of glass is a PHYSICAL change as no change in composition takes place, no new substance is formed.
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संबंधित प्रश्न
Write short answer.
Give two examples of periodic changes
State whether the following is physical or chemical changes.
lightning —
Name two reversible changes.
State one instance where water undergoes a physical change and one in which it undergoes a chemical change.
Differentiate between a physical change and a chemical change with reference to – Formation of products.
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 of iodine is an example of _________ change.
State which of the following pertain to – chemical changes.
- Substance retains its identity.
- The change is permanent.
- No new substance is formed.
- Is easily reversible.
- Produces one or more new substances by a change in its composition.
- The change is temporary.
- The composition and properties of the original substance are not altered.
Give the reason why the following is considered as chemical changes.
A bright light is seen evolved when a strip of magnesium is heated.
Gas exists in three states as solid, liquid, and gas.
