PAG3.1 Flashcards
1
Q
Step 1: (mass)
A
Measure mass of crucible and lid
2
Q
Step 2: (add)
A
Add magnesium ribbon and reweigh crucible and lid
3
Q
Step 3: (heat)
A
Heat the crucible and lid over a Bunsen gently and raise the lid slightly to control
4
Q
Step 4: (end)
A
End of reaction out lid on fully and heat strongly for 5 minutes
5
Q
Step 6: (cool)
A
Allow the crucible to cool and reweigh it
6
Q
Why is the lid raised?
A
To allow for constant access to oxygen via the air
7
Q
Why do we not raise the lid much?
A
Mass of reaction lost
8
Q
How do we know when the reaction is finished?
A
The magnesium stops glowing
