Structure of an atom - Intro to Back to Basics (1.1), Electron Shells & Ions - Intro to Back to Basics (1.2), The Periodic Table - Intro to Back to Basics (1.3)...
SIMDUT, C : La chimie en classe révision, A: Chemistry = Chemical Changes 1.1 The Structure of Matter, A : Chimie = changements chimiques 1.1 La structure de la matière...