Me personally I would say that plastic wrap keeps things colder because it keeps things better contained than aluminum foil. See aluminum foil rips easily than plastic wrap. So I would say plastic wrap.
It would definitely have to be plastic wrap because plastic wrap is an insulator, which aluminum is not.
aluminunm foil
plastic wrap doesn't keep things cold because i don't even now?
aluminum foil
No its not. Why? Because plastic wrap doesn't connect to coldness or warmness i was to wrap something to keep it cold it would be aluminum foil doesn't conduct any heat
If the object is warm to begin with, aluminium foil, as it is a metal and so will conduct the heat out into the environment. (Metals feel cold because they are good conductors and so conduct the heat out of you when you touch them). If the object is cold to begin with, plastic wrap, as it is a poor donductor and will not allow heat from the environment to enter the object easily. (Plastics feel warm because they do not conduct the heat away when you touch them).
aluminum foil
aluminum foil is better at blocking temperature from getting out than plastic wrap. the atoms in the element aluminum are bigger and have more neutrons/electrons and protons than the elements in plastic wrap.
Plastic wrap. Foil makes it hot.
aluminium foil keeps food colder because it doesn't let air in.
the plastic one