Answer:
Explanation:
Physical change -
It refers to any change during any process , where there is no new substance is formed , is referred to as a physical change.
Any change in the state of matter is characterised under physical change.
Chemical change -
It refers to any change in a chemical process , where there is formation of any new substance , is referred to as a chemical change .
From the options given in the question,
The physical change are -
(a) making ice cubes - as there is state change from liquid to solid.
(d) a pile of snow melting - as, there is state change from solid to liquid.
The chemical change are -
(b) burning natural gas - since a chemical reaction takes place , where the natural gas reacts with oxygen.
(c) silver jewelry tarnishing - as chemical reaction takes place.
(e) baking bread - batter is converted to bread , hence there is formation of new substance.
