Question

Week-1
Question I. Classify the change:
a) Burning of an incense stick.-
b) Heating of a metal rim.
c) Crumpling of paper.
d) Sawing of wood.
e) Melting of chocolate.
f) Drying of paint.
g) Steaming of vegetables.
h) Blooming of flowers.
i) Rolling of roti.
j) Baking cake.

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Answer 1

Answer:

1) Inreversible change

burning of incense stick

sawing wood

steaming of vegetables

blooming flower

baking cake

2) reversible change

heating a metal rim

crumping of a paper

melting a chocolate dryind paint

rolling roti

Answer 2

A.) Chemical change

B.) Physical change

C.) Physical change

D.) chemical change

E.) physical change

F.) chemical change

G.) chemical change

H.) chemical change

I.) physical change

J.) chemical change