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When the wick burns and the candle melts is it a chemical or physical change?
it is a chemical change
Name one reversible change when a candle burns?
The wax of the candle melts and then rehardens. This is a physical change and reversible
Why is melting of covered candle a physical change while burning of a candle wick a chemical change?
This is because a candle will change its whole form and stay that way, which is a physical outer change. And a candle wick only burns, it doesn't change it's appearance.
What physical and chemical changes occur when a wax candle burn?
Some wax burns, and as it does so, chemical changes occurs. Wax converts to CO2, CO, and H2O. That is an exothermic reaction The rest of the wax melts with the increased temperature. That is the physical change.
What evidence is there when a candle burns that a physical change takes place?
The was becomes liquid and drips down the rest of the candle.
What evidence tells you that phyisical porperties take place in a candle as it burns?
When a candle burns the solid wax melts to liquid and then it gets oxidized. This change of solid in to liquid is a physical activities of changing the phase of a substance.
How does a candle change physically?
As a candle burns, the candle becomes smaller as the wax melts.
What is the physical and chemical change that occurs when a birthday candle is lit on a cake?
There are multiple physical changes and chemical changes that occur when a candle burns. One physical change is that the candle melts back into liquid wax. One chemical change is flame burning on the wick.
Is a candle melting a physical change or a chemical change?
It is a physical change because when it melts it is still a candle just a melted one
What physical changes happen when a candle is lit?
There are many things that physically chance when a candle burns. The wick burns, and turns into ash, and wax of the candle melts and runs down the sides of the candle or container.
Is burning candle getting shorter physical or chemical change?
Burning a candle is a chemical change because the wax undergoes a chemical reaction with oxygen in the air to form new substances like carbon dioxide and water. This process results in the candle getting shorter as it burns.
when a candle is lit it undergoes a chemical change?
That is correct, a candle (or the material of which it is composed, which is usually paraffin) undergoes a chemical change when it burns.
