Answer:
أنا لا أعرف اللغة العربية ولقد استخدمت ترجمة جوجل للتو <em>:/</em>
A molecule represents the smallest part into which a compound can be divided and still retain its chemical and physical properties
Answer:
For the after reading part:
D
A
A
A
D
D
D
A
D
A
Explanation:
I think its right-
Answer is: (4) proton and neutron.
One unified atomic mass unit is approximately the mass of one nucleon (proton or neutron).
The unified atomic mass unit (amu) is a standard unit of atom mass.
One unified atomic mass unit is approximately the mass of one nucleon (1.66·10⁻²⁷ kg).
For example, one carbon atom has mass of 12 amu (unified atomic mass).
The electron has a mass that is approximately 1/1836 that of the proton.