Alumina is a compound of aluminum and oxygen. It is better known as aluminum oxide or, if it is in mineral form, corundum.
Mixture
Tin foil usually refers to aluminum foil, which is considered a compound. It is considered a compound because even though it contains at least 80% aluminum, it usually has other components mixed in with it for durability and appearance.
Lots of elements can be rolled very to make a foil:gold - used as gold leaf for gilding wood and many other objectssilver - much cheaper than gold and was used to wrap things beforealuminum came along - used to wrap food, chocolate, etc.
Mixture
This foil is also a metal.
ummm...Yeah....With foil
a mixture
an element. its made entirely out of aluminum
Aluminium is an element, not a mixture.
it is an element
it's an element
because aluminum foil is really metal and metal is an element.
It is an element but also can be a mixture because it has silicon and copper in it to make aluminum foil. Some of these people cant give the right answers!! ;P
Pure substance =)
Tin foil usually refers to aluminum foil, which is considered a compound. It is considered a compound because even though it contains at least 80% aluminum, it usually has other components mixed in with it for durability and appearance.
mixture
it's an element
aluminum foil is made of one element, aluminum. All elements are pure substanes, so that means they are homogenous. compounds are also homogeneous. mixtures are heterogeneous or homogeneous, depends if they are mixed up or the same thoughout (like air, like solutions, or like steel (melted iron and carbon frozen into a solid solution).