How to distinguish
aluminum sheet from magnesium sheet?put two sheets into excess NaOH. The one that reacts with NaOH, generating sediment, is magnesium sheet,(sediment, but Al(OH)3 is amphoteric:Mg(OH)2) another one without sediment is
aluminum sheet(in fact, there is sediment Al(OH)3, but it will react with alkali,)seperately put
aluminum sheet and magnesium sheet into NaOH solution, the one generating bubble is
aluminum sheet, because
aluminum sheet will react with strong base , generating hydrogen.put them into NaOH, the one generating bubble is
aluminum sheet, because
aluminum sheet can react with it, generating hydrogen. Or light them in the air, the burning one is magnesium sheet.put them into acid and observe bubble\'s generating speed, the quicker one is magnesium sheet.magnesium sheet will react with alkali.Other related question