Question

i) The substance which accelerate the rate of reaction is known as………. .

ii) ……...is symbolic representation of molecule of a compound.

iii)............ discovered the presence of neutral particle inside the atoms.

iv) Milk is an example of………….solution.

v) Burning of paper is an example of………...change.​

Answer 1

Answer:

i catalyst.

ii chemical formula

iii james chadwick

iv emulsion

v chemical change