Reversible and irreversible physical and chemical changes
Answers
Answer:
Reversible changes: The changes in which we can get back the initial substance by reversing the action is called reversible change.
Physical : Eg.. Folding a paper to make a boat...
then we can unfold the boat to get back the
paper (initial substance).
Chemical: Taking chalk powder and mixing it withwater
when we get a paste of chalk powder we should allow it to dry then we will get back the chalk.
Irreversible change : The changes in which we cannot get back the initial substance by reversing the action is called irreversible change.
Physical : eg: cutting of paper
Chemical :spoilage of food
Answer:
is given
Answer the
this statement.
Give two differences between reversible and irreversible changes.
*Formation of curd is an irreversible as well as a chemical change. Justi
Water cycle is a natural change. Classify it as a (i) physical or chemical cha
ii) a reversible or irreversible change. Also, justify your answer.
How can we say that burning of candle is a chemical change but the glc
mg 9
ons.
f bulb is a physical change?
a