Magnesium ribbon is heated in a crucible to form magnesium oxide. The mass of magnesium ribbon used and data collected during heating is recorded to calculate the formula of magnesium oxide. The apparatus includes a crucible with lid, pipe-clay triangle, magnesium ribbon, electric balance, and other general laboratory equipment. The magnesium ribbon is placed in the crucible and heated strongly while supported over a tripod and mat.

1. BEIJING BISS INTERNATIONAL SCHOOL
GRADE 11 DP CHEMISTRY (SL & HL)
UNIT: Quantitative Chemistry SECTION: 1.2
DATE: ASSESSMENT CRITERIA: DCP; CE
EXPERIMENT TITLE: Determining the formula of magnesium oxide.
Apparatus
Crucible with lid
Pipe-clay triangle
Magnesium ribbon
Sand paper
Electric balance
Other general laboratory apparatus
Instructions
Place a known mass of cleaned magnesium ribbon into the crucible. Place the lid on the crucible
and set up the apparatus as shown in the diagram below.
crucible
pipe-clay triangle
HEAT magnesium ribbon
tripod
mat
Heat the magnesium strongly and record the necessary data in order to calculate the formula of
magnesium oxide.