3. match the following
column A
1 - slow change
2 - fast change
3- reversible change
4- irreversible change
5 - periodic change
6- non - periodic change
7- desirable change
8- undesirable change
9- exothermic change
10- endothermic change
column -B
a) ploughing a field
b) stretching of a spring
c) cooking of food
d) bursting of crackers
e) formation of curd from milk
f) weathering of rocks
g) evaporation of alcohol
h) motion of a swing
I) hammering of metals into sheets
j) growth of a tree
k) rusting of iron
l) formation of seeds from flowers
m) breaking of glass tumbler
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Explanation:
3. match the following
column A
1 - slow change
2 - fast change
3- reversible change
4- irreversible change
5 - periodic change
6- non - periodic change
7- desirable change
8- undesirable change
9- exothermic change
10- endothermic change
column -B
a) ploughing a field
b) stretching of a spring
c) cooking of food
d) bursting of crackers
e) formation of curd from milk
f) weathering of rocks
g) evaporation of alcohol
h) motion of a swing
I) hammering of metals into sheets
j) growth of a tree
k) rusting of iron
l) formation of seeds from flowers
m) breaking of glass tumbler
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