Massing Mg Lab
Massing Magnesium Lab
Research Question/Aim
To understand the change in mass after burning magnesium and to also determine the chemical formula of magnesium oxide
Hypothesis
Burning the magnesium will result in an increase in mass because the magnesium will react with oxygen in the air to make magnesium oxide
Variables
Independent- Initial mass of magnesium (Mg)
Dependent- Mass of the burnt magnesium (MgO)
Controlled:
Intensity of flame
Apparatus used (same crucible, Bunsen burner, tongs, electric balance)
Duration of burning the crucible and magnesium
Size of magnesium ribbon (was about 10-11 cm long)
Materials
1. Goggles (eye protection)
2. Pair of metal tongs
3. Crucible (ceramic) with lid
4. Bunsen burner
5. Matches
6. Tripod
7. Pipe clay triangle
8. Heat resistant mat
9. Electric balance
10. Magnesium ribbon (x3)
Safety
Wear goggles to protect eyes
Wait for the crucible to cool off before touching it (the crucible after burning is very hot and may burn the skin)
The person who moved the hot circle is responsible for informing others that it is hot
Before touching the crucible, place hand near it to see if it is warm
Tie hair up to avoid burning hair
Procedure
1. Set up the heat resistant mat, Bunsen burner, tripod, and pipe clay triangle
2. Clean the crucible [with the lid] first by washing it under the tap
3. Dry the crucible by heating it with the Bunsen burner (will remove all the water)
4. After the crucible has cooled completely weigh the crucible [with the lid] on the electric balance and record it
5. Twist a piece of magnesium ribbon into a loose coil
6. Weigh the crucible with the magnesium inside it [with the lid] and record it.
7. Burn the magnesium with the lid placed slightly ajar to facilitate gas exchange when heating (since oxygen is required for this combustion reaction)
8. Burn the magnesium for a few minutes, making sure to check now and again by lifting the lid with
Research Question/Aim
To understand the change in mass after burning magnesium and to also determine the chemical formula of magnesium oxide
Hypothesis
Burning the magnesium will result in an increase in mass because the magnesium will react with oxygen in the air to make magnesium oxide
Variables
Independent- Initial mass of magnesium (Mg)
Dependent- Mass of the burnt magnesium (MgO)
Controlled:
Intensity of flame
Apparatus used (same crucible, Bunsen burner, tongs, electric balance)
Duration of burning the crucible and magnesium
Size of magnesium ribbon (was about 10-11 cm long)
Materials
1. Goggles (eye protection)
2. Pair of metal tongs
3. Crucible (ceramic) with lid
4. Bunsen burner
5. Matches
6. Tripod
7. Pipe clay triangle
8. Heat resistant mat
9. Electric balance
10. Magnesium ribbon (x3)
Safety
Wear goggles to protect eyes
Wait for the crucible to cool off before touching it (the crucible after burning is very hot and may burn the skin)
The person who moved the hot circle is responsible for informing others that it is hot
Before touching the crucible, place hand near it to see if it is warm
Tie hair up to avoid burning hair
Procedure
1. Set up the heat resistant mat, Bunsen burner, tripod, and pipe clay triangle
2. Clean the crucible [with the lid] first by washing it under the tap
3. Dry the crucible by heating it with the Bunsen burner (will remove all the water)
4. After the crucible has cooled completely weigh the crucible [with the lid] on the electric balance and record it
5. Twist a piece of magnesium ribbon into a loose coil
6. Weigh the crucible with the magnesium inside it [with the lid] and record it.
7. Burn the magnesium with the lid placed slightly ajar to facilitate gas exchange when heating (since oxygen is required for this combustion reaction)
8. Burn the magnesium for a few minutes, making sure to check now and again by lifting the lid with