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Scrierea prescurtată a denumirii unui element chimic SIMBOL CHIMIC
Particula pozitivă din nucleul atomului PROTONUL
Electronii sunt încărcați cu sarcină electrică... NEGATIVĂ
Număr atomic Z
Număr de masă A
Protonii și neutronii se află în... NUCLEU
Atomul are sarcină electrică.... NEUTRĂ
Elementele chimice care formează ioni negativi NEMETALELE
Atomul încărcat cu sarcină electrică pozitivă /negativă ION
Elementele chimice care formează Ioni pozitivi METALELE
Created by: ANA LUCA