Classify the changes involved in the following processes as physical or
chemical changes:
a. Photosynthesis
b. Melting of ice
c. Burning of paper
d. Cutting of pap
Answers
Required Answer:
a) Photosynthesis
⇒ Chemical change
b) Melting of ice
⇒ Physical change
c) Burning of paper
⇒ Chemical change
d) Cutting of paper
⇒ Physical change
⠀⠀⠀⠀⠀_____________
About chemical change :
>> The change in which chemical properties of a substance changes is called chemical change.
>> Chemical changes are irreversible.
>> In a chemical change, new substance is formed.
>> Chemical changes are permanent changes.
>> Photosynthesis, burning of paper, cooking of food are some examples of chemical changes.
About physical change :
>> The change in which physical properties of a substance changes is called physical change.
>> Physical changes are mostly reversible.
>> In a physical change, new substance is not formed.
>> Physical changes are temporary changes.
>> Melting of ice, cutting of paper, cutting of wood are some examples of physical changes.
⠀⠀⠀⠀⠀_____________
Explanation: