Instructions Full Game: These are multiple-choice quizzes with four possible answer choices that include all questions in a given set.     
Identify the following individual:

Lived: 1776 - 1856
The first scientist to realize that elements can exist in the form of molecules rather than as individual atoms. Also the originator of their own self-named law and constant.
Subrahmanyan Chandrasekhar
Emanuel Lasker
Amedeo Avogadro
Francis Bacon