Education Chemistry 1 yousef berbar

1. S e c t i o n o n e & t w o B y : Y o u s s e f B e r b a r 2. Total amount of energy in universe stays the same  When matter undergoes the change , there is often…

Education Chemistry 1 yousef berbar

Chemistry C h e m I s t r y Section one & two By : Youssef Berbar Total amount of energy in universe stays the same When matter undergoes the change , there is often…