classify the following into physical and chemical change:(a)melting of wax (b)burning of agarbatti (c)tearing of cloth (d)cooking of food
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Answer:
a - physical change
b -chemical change
c- physical change
d- chemical change
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a)physical change
b)chemical change
c)chemical change
d)chemical change
Explanation-a) is a physical change because wax first melts then again freezes
b) is a chemical change because it cannot return to it's original state once it burns
c) is a chemical change because it cannot be fixed unless it is stiched
d) is a chemical change becuase cooked food cannot become raw again
b)chemical change
c)chemical change
d)chemical change
Explanation-a) is a physical change because wax first melts then again freezes
b) is a chemical change because it cannot return to it's original state once it burns
c) is a chemical change because it cannot be fixed unless it is stiched
d) is a chemical change becuase cooked food cannot become raw again
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