Question

2. Fill in the blanks.
a. A chemical reaction is represented by a..............
b. Explosion of a firecracker is a chemical change that produces..............
and..........
c. Evaporation of water is. ................
as heat is absorbed to convert it into
water vapour.
d. The flaky reddish brown substance formed on the surface of an iron object is
called. .............
e. the..... reaction takes place on the cut surface of fruits and vegetables.​

Answer 1

Answer:

1. substance
2. explosive sound
3. surface phenomena
4. rust
5. black pigment.