Question

Chemical and physical change why. (b)melting of butter,in a pen.
(c)Rusting of iron almirah .
(d) boiling of water to form steam.
(e)Passing of electric current,through water and the water breaking down into hydrogen and oxygen ,gases.
(f) Dissolving common salt and in water.
(g) Making a fruit salad from raw fruit.
(h) burning of paper and wood.​

Answer 1

Answer:

a) due to heating

b)due to comming in presence of atmosphere

c) due to evaporation

h) because it is good conductor of heat and electricity