Nurul, Usman, Ali, and Imran present an experiment to demonstrate how to get a boiled egg into a conical flask using only matches, paper, a heatproof mat, safety goggles, and the flask and egg. The instructions explain that lighting a strip of paper on fire inside the flask will cause the heated air to expand and suck the egg into the flask once the fire is extinguished and the air cools and contracts, creating a vacuum.

1. Nurul, Usman, Ali & Imran.

2. How would you get a boiled egg
into a conical flask?
 You can’t use the following:
 Physical force
 Get a bigger flask
 Break the egg apart
 All you have are:
 Box of matches
 Paper

3. Get the egg
to the bottom
of the flask!
Egg
How is this
possible? Conical
Flask

4. You will need:
 x1 – Heatproof mat
 x1 – Conical flask
 x1 – Boiled egg
 x1 – Strip of paper
 x1 – Safety goggles
 Caution – Sixth formers & adults will
carry the matches, please ask for help!

5. How its done...
1. Light the paper with a match
so it sets on fire
2. Place the paper quickly
inside the conical flask
3. Cover the top of the flask
with the egg
4. Stand back & watch!

6. Why does this happen?
 Expansion & Contraction
 When things heat up they expand...
 The heated air from the flame expands in the flask,
but all the oxygen is used up due to the egg
covering the bottle opening...
 The fire dies, and the air inside the flask cools
again causing it to contract...
 Air cannot get into the flask so a vacuum is
created. This vacuum sucks the egg into the flask.

7. Thanks for Participating in
our experiment...
We hope you enjoyed it!