Foil (metal)

very thin sheet metal, usually made by hammering or rolling

A foil is a very thin sheet of metal. It is usually made by hammering or rolling. Foils are made with malleable metals, such as aluminium, copper, tin, and gold. Foils can be torn easily. An extremely thin foil is called a metal leaf. Foil is commonly used for household uses. UsesĀ : Foil's experiment to show how the transformation of energy to matter

A roll of aluminium foil