Intro to Elements, Compounds, & the Periodic Table - [1-1-3]
32:44
What is Chemical & Physical Change in Chemistry? - Intensive & Extensive Properties - [1-1-4]
46:00
Elements, Compounds & the Periodic Table Explained
1:08:40
Intro to Chemistry & What is Chemistry? - [1-1-1]
1:00:11
What is the Periodic Table? How are Elements Organized?
41:20
What is Atomic Mass & Mass Defect on the Periodic Table? - [1-2-9]
31:33
O Mais Antigo Problema Não Resolvido da Matemática
18:53
Modern Periodic Table
34:29