Answer:
The experiment described involves observing the effects of burning a birthday candle covered by an inverted glass. Here's a summary of what you might observe and the explanation:
1. **Observations:**
- When the candle is lit under the inverted glass, after a minute or so, you may observe the flame extinguishing.
- There might be a residue or condensation forming on the inside of the glass.
2. **Explanation:**
- The candle burns by consuming oxygen and producing carbon dioxide and water vapor through the process of combustion.
- When the glass is placed over the candle, it creates a closed environment. As the candle burns, it uses up the available oxygen inside the glass.
- The flame goes out due to oxygen depletion inside the closed space.
- The residue or condensation on the inside of the glass is the result of water vapor from the burning candle cooling and condensing on the cooler surface of the glass.
3. **After the flame goes out:**
- The wick continues to emit some smoke or particles after the flame is extinguished.
In summary, the experiment demonstrates the basic principles of combustion, oxygen consumption, and the formation of water vapor. The residue on the glass illustrates the condensation of water vapor produced during the candle's combustion.
