Burning is a chemical change, regardless of what is burned.
When oil and water mix it is due to an emulsifier being added to the solution. The emulsifier has one hydrophobic tail which will attach to the oil and one hydrophilic tail which attaches to the water. It is more of a chemical change than a physical one since the oil and water don't change state, however they will not form an emulsification without an aid so its technically not due to a chemical reaction between the water and oil alone either.
Mixing sand into garden soil is a physical change. This is because the sand's composition remains the same, and it can be separated from the soil by physical means (such as sifting). No new substances are formed during this process.
No it is a physical change because it can be sewn back together and changed. A chemical change would mean tha it couldn't be undone like burning oil. The oil one would not be able to get back.
No, pumping up a tire is a physical change because it does not alter the chemical composition of the tire or the air inside it. The process simply involves adding or removing air, which is a reversible change.
Physical
physical change
Physical ... it's only a state change. Cool it and it reverts to its old condition.
Oil and water do not mix because they have different polarities. When oil and water are mixed, they separate into distinct layers due to their different densities. This separation is a physical change where the molecules of each substance retain their original properties.
physical- there's no chemical change.
It is a physical change because the oil and the water do not change in chemical composition.
It is a chemical change.
Yes.
It will eventually plug up. You will then either starve the engine of oil, or be pumping unfiltered oil through the engine. Both will lead to engine failure.It will eventually plug up. You will then either starve the engine of oil, or be pumping unfiltered oil through the engine. Both will lead to engine failure.
Oil floating on water is not a "change", so asking whether it's a physical change or a chemical one is nonsense. To the extent there's any meaning at all to the question, it's a phenomenon caused by the physical properties of the two materials.
Mixing oil and water is a physical change because no new substances are formed. The molecules of oil and water remain the same, they are just physically mixed together.
physical change hunnythe color would be the property of the oilbut as you can see the color changesthe chemicals do not
Halliburton