Answer the following questions-
Q1. Give two examples for each of the following
cases:
(a) Physical changes which are reversible.??
(b) Physical changes which are not reversible.??
(c) Chemical changes??
Q2 Which is the best method to prevent rusting???
Q3. What kind of change is shown by tearing of
paper???
Q4. Define chemical change.??
Q5. Why physical change is named so???
please solve fast it is argent all questions and answers
Answers
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0
Answer:
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Answered by
5
Answer:
a = 1 - turning water into ice
2- turning water into water vapour
b = 1- burning of candle
2 - plucking flower
c = chemical change
d= chemical change = changes occur when a substance combines with another to form a new substance.
e= physical change means that is a change in the physical properties of tha t substance. It has no work to do with the chemical change reaction and this type of change can be reversed also
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