Aluminum.
Aluminium
aluminium foil
Aluminum.
This foil is also a metal.
depends on foil:aluminumgold (usually called leaf not foil, most common use is lettering on leather bound books)silver (usually called leaf not foil, most common use is lettering on leather bound books)tin (used for purpose aluminum foil is used for, rarely seen today)lead (often used in roofing to prevent leaks from pooling water, thick for foil)etc.
aluminium
because aluminum foil is really metal and metal is an element.
Foil is usually made of Aluminum and maybe sometimes some form of steel. Metals like Magnesium or Tungsten wouldn't be used in foil.
no because aluminum foil is a metal
What kind of foil? The stuff you get in the supermarket to wrap sandwiches is mostly aluminum (although it contains other elements - both added intentionally and picked up from the recycling process that a lot of aluminum goes through) but "foil" is just paper-thin sheet metal so any metal malleable enough to roll down to a few thousandths of an inch thickness, and strong enough to hold together when it's rolled that thin, can be made into foil. There's gold foil, silver foil, copper foil, tin foil - yes, "tin foil" that's really made out of tin exists - lead foil, iron foil, steel foil...Aluminium is the metal used in foil. Its symbol is Al. Its atomic number is 13.
Aluminium foil