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Worksheets8th_Ch3.1_atoms, bonding & the periodic table
Total questions: 13
Worksheet time: 7mins
Which of the following is NOT part of the modern model of the atom?
a nucleus is in the center of the atom
protons are in the nucleus
electrons are in the nucleus
neutrons are in the nucleus
What determines the identity of an atom?
number of protons
number of neutrons
number of electrons
number of valence electrons
What determines the reactivity of an element?
number of protons
number of neutrons
number of electrons
number of valence electrons
A(n) ____________ ______________ is the force of attraction that holds atoms together based on the arrangement of electrons between them.
electron cloud
chemical bond
positive charge
negative charge
An atom's valence electrons are those electrons that have the _______________ energy.
lowest
highest
Atoms tend to be stable and nonreactive if they have ______ valence electrons.
2
4
6
8
In the periodic table, what is the name for a vertical column of elements?
group
period
In the periodic table, the number of valence electrons in each element ___________ from left to right across each period.
increases
decreases
stays the same
The reactivity of a METAL depends on how easily it _______ its valence electrons.
loses
gains
The reactivity of a NONMETAL depends on how easily it _______ valence electrons.
loses
gains
Which group is nonreactive?
metals
nonmetals
noble gases
halogens
Within each _________ in the periodic table, elements have similar properties because they have the same number of valence electrons.
period
group
What shows the number of valence electrons in an atom in pictorial fashion?
chemical symbol
periodic table
electron dot structure
atomic number
