1. _____ ______ Before After Observations: At the very end the water…
_____ ______
Before
After 2. 5.
candle
Erlenmeyer flask 1. 3. 6. 4.
water
beaker
Observations:
At the very end the water…
When the candle is lit…
Prediction:
Now let’s see what happens!
The demo works TONS easier this way!
Changes made to the lesson from the original:
Materials- 1,000 mL beaker, tea light candle, 1,000 mL erlenmeyer.
Keep the mouth of the erlenmeyer submerged during the whole demo. As always, practice beforehand, and be safe with the flame.
Explanation:
candle was lit
air inside heated, expanded
air escaped; (less air inside than before)
candle went out
air inside cooled and contracted
air pressure outside pushed water in
The reason this
happened is because…
Why I think this happened: