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What happens when a candle is alight and there is a chemical change?
Wiki User
∙ 9y ago
the candle wax changes state from a solid to a liquid and that is the chemical change
when a candle is alight the hydrogen and carbon react with the oxygen to produce heat and light energy. the heat energy then causes the wax to turn from a solid to a liquid.
But then a lot more is involved.
because you need both a chemical and a physical change to explain what happens. the candle turns from a solid, to a liquid because it's melting, and then turns into a gas because it's condensating and then evaporating. This is because the hydrogen and carbon which means hydrocarbon basically- combust with the air (react) causing new substances to occur in it's place.
until eventually there is no wax there left because it's all condensated and evaporated. I'm in yr 7 as a write this for a project, and i know others need this help to=].
Oxygen is simply h20 with some other included particles, and h20 simply stand for water (with a small 2) .
A flame needs different substances to be able to be a flame, for example the fire triangle, the three main things a flame needs to be a flame, heat, the energy to produce the flame, oxygen, usually from the air, and fuel, a substance that burns for the flame. there is a lot more involved also, such as monoxide that is produced when is occurs that it's condensating the hot wax.
also when the liquid is turning back into a solid it's called freezing solidification, another simple chemical equation for it is: (hydro carbon(c10H22, or higher hydro carbon) (5) +02(g)==7 Co2(g) + H20(g). when it combust with the air.
Good luck with that answer. =]. p.s colouring diagrams helps if your doing a project. x
Wiki User
∙ 9y ago
Wiki User
∙ 12y agoA physical change is the melting wax. A chemical change is the burning wick and wax. Remeber, the wax will melt before it burns.
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In a candle explain both changes using the big idea of energy?
When a candle is burnt a physical AND chemical change takes place. Its a physical change when the wax is being melted because the chemical structure has not change, meaning it cannot be a chemical change. Its also a chemical change because you are burning the string. When you burn something the chemical structure DOES change, meaning it is a chemical change.
Mass does not change during a chemical change how about for a physical change?
Physical changes are like cutting paper. The mass does not change. Chemical changes do not change total mass either. If you put a candle in a sealed container so that you may measure the total mass of the candle and the air before burning, then light the candle electrically but keep everything sealed, the total mass after burning will still be the same. But if you measure only the candle, then its mass has changed. So the mass of one single 'ingredient' will change during a chemical change.
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.
Is lighting a chemical change?
Yes. While act of melting wax is a physical change, because you can remould it, the wax is actually what is primarily burned as fuel. You cannot unburn the wick nor the consumed wax. Remember, if it can be redone, it is probably physical and vice versa.The wick of a candle is used to light it and is used as a medium for burning the wax. As the wax is heated, it is soaked into the burning wick. As the fire burns the wax on the wick, more melted wax is absorbed into by the wick. As the wax burns down, so does the wick.
What is an ability of a material to change its chemical makeup?
Chemical property
What is the chemical change when a candle is alight?
Burning of the wick or candle material, thermal dissociation of candle material.
when a candle is alight what is its physical change?
The wax melts and vaporizes, these changes are physical changes caused by te flame. They are a change in state only, and in these no new substance is formed. The chemical change is the combustion of the wax and the wick
Chemical change of candle?
It constituen carbon and hydrogen converted into CO2 and H2O. It is the chemical change of candle
What is the chemical change called in a lit candle?
chemical change
Is Lighting candle physical or chemical change?
It is a chemical change.
Is burning candle getting shorter physical or chemical change?
Burning a candle is a chemical change. It cannot be "unburnt"
Is a candle more of a chemical change then toast in a toaster?
It is a chemical change.
Is candle wax melting physical property?
Melting candle wax is a chemical change. Why? Because when you cook or burn candle wax it melts so it is a chemical change.
Is candle burning physical change?
Physical change means change physically while chemical change means change chemically or change in chemical properties.Like if you would drop a chip of zinc in sulphuric acid it will its color will be changed which is no doubt a physical change.But,also its properties are changed as it will be transformed into zinc sulphate from simple zinc,thus it also undergoes a chemical change. Now,with your question,the candle breaks but the candle remains the candle,so,its not a chemical change but a physical change only.Hope it helps!
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.
When the wick burns and the candle melts is it a chemical or physical change?
it is a chemical change
How do you know if a candle is a chemical change?
Can you reverse the change?
