Question

Take some sugar in an evaporating dish. Place the dish on a tripod
and heat it. Observe the changes taking place in the sugar. Stop heating when a
blackish substance is seen at the bottom of the evaporating dish. What kind of
change does the above process bring about ?

Answer 1

Answer:

The heat causes the sugar's atoms to combine with the oxygen in the air, forming new groups of atoms. Energy is released in this chemical reaction in the form of smoke and black soot