Chapter Name: Chemical Reactions and Equations
Activity Name: Burning of magnesium ribbon in Chemical Reactions and Equations
This experiment demonstrates the chemical reaction between magnesium and oxygen, resulting in the formation of magnesium oxide. It also illustrates the release of heat energy during the combustion of magnesium.
- Magnesium ribbon (about 3 cm long)
- Pair of tongs
- Spirit lamp or burner
Step by Step Procedure:
- Take a small piece (about 3 cm long) of magnesium ribbon.
- Rub the magnesium ribbon with sandpaper to remove any oxide layer on its surface.
- Hold the cleaned magnesium ribbon with a pair of tongs to keep a safe distance from the flame during the experiment.
- Use a spirit lamp or burner to ignite the magnesium ribbon.
When you burn the magnesium ribbon, you will observe the following:
- The magnesium ribbon burns with a dazzling white flame.
- The magnesium ribbon undergoes a chemical reaction with oxygen in the air.
- The magnesium ribbon changes into a white powder, which is magnesium oxide.
- There will be a release of enormous amount of heat energy during the combustion.
- Handle the magnesium ribbon with tongs to avoid direct contact with the flame.
- Perform the experiment in a well-ventilated area to prevent the buildup of fumes.
- Keep a safe distance from the burning magnesium to avoid any accidents.
- Do not look directly at the intense white flame, as it may harm your eyes.
Lesson Learnt from Experiment:
Through this experiment, we learn that magnesium can react with oxygen to form magnesium oxide, which is an example of a chemical combination reaction. Additionally, we observe that such reactions release a significant amount of heat energy.