give two examples each of physical and chemical changes
Answers
SOLUTION
Physical change Chemical Change
1. Change that occurs without a
change in chemical composition.
2. No new substance is formed only
the state changes
3. It is a temporary process.
E.g. Change of state ice to water to gas
1. Chemical change brings difference in chemical properties.
2. New substance are formed.
3. It is a permanent process.
E.g. Burning
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Answer:
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Explanation:
A chemical change results from a chemical reaction, while a physical change is when matter changes forms but not chemical identity. Examples of chemical changes are burning, cooking, rusting, and rotting. Examples of physical changes are boiling, melting, freezing, and shredding.
Examples of Physical Change
Breaking/Crushing of any Object
Expansion of Metal on Heating
Dissolving Sugar or Salt (Solute) in Water (Solvent) (as a result, a solution is formed)
Solidification of Molten Metal on Cooling
Shredding Paper
Rusting of Iron (Read)
Souring of Milk
Ripening of Fruits
Digestion of Food
Bursting of Crackers