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Atom Vocabulary

What is the positive particle located in the atom’s nucleus? proton
What is the negative particle located in the atom’s orbitals? electron
What is the neutral particle located in the atom’s nucleus? neutron
What are the outermost electrons? valence electrons
What two parts of an atom are in the nucleus? protons and neutrons
What is the center core of the atom? nucleus
What is the maximum number of electrons that the first energy level can hold? 2
What is the maximum number of electrons that the 2nd or 3rd energy level can hold? 8
Which atom is most reactive, the atom with one valence electron or the atom with 8 valence electrons? one
What do valence electrons do (what is their role)? create chemical bonds
Where is a majority of the mass of the atom found? nuclues
Why do electrons not count into the atomic mass? electrons are too small (it takes 2000 electrons to equal the mass of one proton or one neutron)
The formula for water is H2O. Is water organic or inorganic? inorganic
The formula for glucose is C6H12O6. Is glucose organic or inorganic? organic
How do you calculate neutrons? atomic mass-atomic number
Which group of the periodic table is most stable? Why? Group 18- it has all 8 valence electrons
Which group of the periodic table is least stable? Why? Group 1- only one valence electron
Why is an atom electrically neutral? It has the same number of protons as electrons.
Created by: lschramme



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