10 Questions
What is the charge of a proton?
+1
What holds the nucleus together despite the coulomb forces between protons?
Strong nuclear force
What is the charge of an electron?
-1
What is the smallest unit of matter that retains the chemical properties of an element?
Atom
In an uncharged atom, what is the relationship between orbital electrons and protons within the nucleus?
Orbital electrons are equal to protons
What determines the arrangement of electron shells for an atom?
Atomic number
What is the total number of protons and neutrons in the nucleus of an atom called?
Atomic mass number
Which term describes the relative mass of an atom including orbital electrons?
Atomic mass
What is represented by the symbol A in relation to atoms?
Atomic mass number
What is used to group atoms into elements?
Atomic number
Test your knowledge about the fundamental structure of atoms, including the nucleus, orbital electrons, and nucleons. Learn about the smallest unit of matter and its chemical properties.
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