Question

A chemical change may occur by one of the following changes: a) Evolution of gas b) Change of color c) Formation of precipitate d) Absorption or evolution of heat and light. Give an example of each case

Answer 1

Answer:

a)when u boil water it evaporates change into gaseous state

b)rusting of iron

c)Mixing silver nitrate and sodium chloride in water will cause silver chloride to precipitate out of solution as a solid.

d)when you burn a mg ribbon in presence of o2

Answer 2

a)when u boil water it evaporates change into gaseous state

b)rusting of iron

c)Mixing silver nitrate and sodium chloride in water will cause silver chloride to precipitate out of solution as a solid.

d)when you burn a mg ribbon in presence of o2

hope it will be help[ful