when a candle burns both physical and chemical changes takes place identify this changes
Answers
Answer:
Explanation:
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 burning of the wax vapour is a chemical change.
Answer:
Explanation:
PHYSICAL CHANGE:
A change which is reversible and the properties do not change of the matter.
it is reversible change since the properties of wax do not change.
When the candle burns , the wax begins to melt and changes it shape. This melted wax can be again moulded to form the same shape
CHEMICAL CHANGE :
A change which is irreversible and the properties of the matter change and form new substance.
The burnt wich is of no use and hence it is an irreversible change
When the candle melts , the wick burns and slowly it begans to decrease its length and turns into black. This burnt wick cannot be again changed into the original white wick.