Fact 1: Heating an egg causes a chemical reaction in the egg.

Fact 2: While pasta is cooking, warm the oil over medium heat in a large skillet.

Given the two facts above, answer the question "Warming in a skillet causes a what in an egg?" with the following options: 
- chemical reaction
 - egg formation
 - shell crack
 - They may not survive.
 - chemical ending
 - Chemical energy
 - Evaporation
 - looseness


 

 chemical reaction        