Question

When a candle burns both physical and chemical changes take place identify the changes and explain each one of them

Answer 1

In a burning candle, there are both physical and chemical changes. The melting of the solid wax to form liquid wax and the evaporation of liquid wax to form wax vapour are physical changes. ... The wax vapour reacts with oxygen in the air to form new substances including carbon dioxide and ash.

Answer 2

Explanation:

When a candle burns, both physical and chemical changes take place.

Physical change → Melting of wax

Chemical change → Burning of wax

Eating of food is another example where both physical and chemical changes occur simultaneously.

Physical change → Breaking down of larger food particles into smaller particles

Chemical change → Digestion of food