Elements and atoms | Atoms, compounds, and ions | Chemistry | Khan Academy PDF Print E-mail
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Written by punjalak   
Friday, 11 August 2017 11:49

How elements relate to atoms. The basics of how protons, electrons and neutrons make up an atom.

ที่มา : https://www.youtube.com/channel/UC4a-Gbdw7vOaccHmFo40b9g
อัพโหลดโดย Khan Academy
 

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