Question

alu·mi·num
  (US)  ) /əˈluːmənəm/ ( or Brit   al·u·min·i·um /ˌæljəˈmınijəm/  noun   [  noncount  ]
  : a silver metal that is strong and light and that is used for making many products
  — often used before another noun
   aluminum cans
   aluminum foil [=a very thin sheet of aluminum that is used for covering or wrapping food]