Yes, mixing oil and vinegar is considered a reversible change. When combined, they create an emulsion, but if left to sit or shaken, they will eventually separate back into two distinct layers. This separation indicates that the original substances can be recovered without any chemical alteration.
No, a lava lamp is not a reversible change. The melting and mixing of the wax and oil inside the lamp is a physical change that cannot be easily reversed to its original state.
physical- there's no chemical change.
reversible
Irreversible
No because you can't get the vinegar back to it's original state because some of the bacteria has gone inside the milk
yes because salad dressing is a suspension of vinegar that will separate into layers if left undisturbed.
No. Usually 4 to1 oil/vinegar ratio.
Physical. Anything that can be separated by physical means is a physical change, and you can separate oil from vinegar by skimming it off the top. You are also not making a new substance. In order to have a chemical reaction occur you must produce a new substance, not just a mixture. For example, vinegar and baking soda will produce carbon dioxide gas.
your mixing two chemicals together so of course its a chemical change
Droplets of oil in vinegary 7up=) And lots of foam, if you don't degas the beverage before mixing.
A solution of vinegar is obtained with a layer of oil on the top.
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.