-365 Simple Science Experiments. By E. Richard Churchill, Louis V. Loeschnig, and Muriel Mandell. 1997.

 

- http://www.phschool.com/atschool/science_activity_library/images/

acids_and_bases_phscale.jpg

 

- http://allergyadvisor.com/Educational/images/Egg%20and%20Shell.jpg

 

- http://www.bigfoto.com/sites/galery/photos1/egg-broken-98g.jpg

 

- http://www.ieee.tue.nl/current/images/events/egg2004.jpg

 

- http://savorhospitality.com/cart/images/quick_egg_00.jpg