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Petrol or gasoline is basically octane - C8H18 and when it burns in air (oxygen) it converts to Carbon Dioxide and water and heat. It is thus a chemical change.
Each carbon atom in the fuel has approximately two hydrogen atoms attached to it, and so its reduced molecular weight is a multiple about 14. In the combustion process each carbon atom is combined with two oxygen atoms of atomic weight 16, to produce CO2 with a molecular weight of 44. In addition, the two atoms of hydrogen are united with one further oxygen atom to produce water with a molecular weight of 18.
So (approximately) 14 kg of fuel reacts with 48 kg of oxygen to produce 44 kg of carbon dioxide and 18 kg of water.
What else can I help you with?
Is the burning of phosphorus physical or chemical change?
Burning of anything is a chemical change. Combustion (burning) is a chemical reaction; it is simply where oxygen is added to, for example, an element, and turns it into an oxide. Burning phosphorus would result in phosphorus oxide. P + O2 --> P4010
Is Epsom salt and ammonia a physical or chemical change?
Mixing Epsom salt and ammonia would result in a physical change. It is considered physical because no new substances are formed during the mixing process.
Is copper sulphate a physical change or chemical?
Copper sulfate dissolving in water is a physical change as no new substance is formed. However, if copper sulfate is heated to decomposition, it would be a chemical change because a new substance is formed.
Is heating sulfur a physical or chemical change?
Heating sulfur is a physical change. You're not changing the chemical composition of the sulfur, just the temperature. Now if you heat it to its boiling point and and it changes to a vapor it's a chemical change because you've changed its state of matter.(Actually changing the state of matter of an object is still a physical change, as it does not change the chemical composition of the element)
Is a glass of juice frozen melted and refrozen a chemical or physical change?
physical :D I hope that helps
Is burning toast a physical change?
Burning toast would be a chemical change. The bread would be changed into carbon and the reaction can not be reversed.
How does chemical change happens in photosynthesis?
it happens when •A physical change is reversible, a chemical change is not.•the freezing of water would be a physical change because it can be reversed, whereas the burning of wood is a chemical change - you can't.
Is burning a tortilla chemical or physical change?
Chemical; you are changing the physical properties of the tortilla. Physical would be just warming or cooling it for example
Is burning of leaves physical change or chemical change?
Burning leaves would be a chemical change because once the leaves are burnt, you can't turn the ashes back into leaves.
Is flammability of a substance is physical or chemical change?
Stating that something is flammable is stating a chemical property. But the actual burning would be a chemical change.
Is tearing cloth a physical or chemical change?
It is PHYSICAL CHANGE because it does not change into another substance and it does not have chemical reaction, it can be sewn back to return to its original form.
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!
Would the burning of a house be a physical change?
Mostly chemical, but physical changes also occur, such as when the windows blow out.
Is burning toast a physical or a chemical change?
A chemical change.
Is chopping firewood a chemical change?
Chopping firewood is a physical change, not a chemical change. The act of chopping firewood only changes the size and shape of the wood, but the chemical composition of the wood remains the same.
Is Burning wood is an example of physical change.?
I think you mean "Is burning a paper a physical change?" Burning a paper is not a physical change. It is a chemical change. Because you can't turn the ashes of the paper into a normal paper again. Examples of physical change: Cutting a paper, sharpening a pencil, writing on a paper... Examples of chemical change: Rotten egg, Rusted steel, molded bread...
What are examples of chemical and physical change?
melting any metal is physical. rusting iron is chemical
