Are there any differences between the surface of new and old aluminum foils?

Yes, there are differences between the surface of new and old aluminum foils. New aluminum foil typically has a shiny, smooth surface with no visible scratches or damage. It is also more pliable and easier to work with. On the other hand, old aluminum foil may have a duller appearance due to oxidation, and it may have scratches, tears, or other signs of wear. The surface of old foil can also be less uniform and more prone to tearing, making it less effective for certain uses. Additionally, the adhesive properties of old foil can be compromised, affecting its ability to seal or wrap food items.