Question

If the composition of matter changes during a process then it is called a
(a) physical change
(b) reversible change
(c) irreversible change
(d) chemical change
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Answer 1

Answer:

d) chemical change

Explanation:

• physical change is a change when there is change in the shape of the object or state of the object such as if it is changed into liquid to gas but the molecular composition of its remains same
• reversible are those in which we can get back the matter even after reaction
• irreversible are those in which the matter doesnt remain exactly that ....may be it gets reduced or increased or change chemically...its not specific
• but chemical changes are the specific leads to formation of different molecules

hope it helps...

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