03
A student uses this apparatus to find the mass of magnesium oxide that forms when a strip of magnesium
ribbon is burned in air
This is the student's method
weigh an empty crucible and lid
place a coiled strip of freshly cleaned magnesium nibbon in the crucible
weigh the crucible, lid and ribbon
heat the crucible strongly for several minutes, lifting the lid and quickly replacing it several times
leave the crucible, lid and contents to cool and then reweigh
(a) (0 Describe the appearance of the freshly cleaned magnesium nibbon and the appearance of the
magnesium oxide that forms
magnesium ribbon
magnesium oxide