Πέμπτη 29 Μαΐου 2014

What Is Chemistry?

Chemistry is the study of matter, its properties, how and why substances combine or separate to form other substances, and how substances interact with energy.



via LiveScience.com http://ift.tt/1wwEEKN

Δεν υπάρχουν σχόλια:

Δημοσίευση σχολίου