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WorksheetsChemical Bonds
Total questions: 14
Worksheet time: 9mins
Name
Class
Date
1.
Some elements combine chemically and no longer have the same ________________ they did before forming a compound.
a)
valence electons
b)
energy
c)
properties
d)
group number
2.
A _________________ is composed of symbols and subscripts indicating the number of atoms of an element in a compound.
a)
Chemical Equation
b)
Chemical Reaction
c)
Synthesis Reaction
d)
Chemical Notation
3.
Atoms form compounds when the compound is more ______________ than the separate atoms. Noble gases are more _________than other elements because they have a complete outer energy level.
a)
reactive
b)
stable
c)
explosive
d)
toxic
4.
Elements that do not have full outer energy levels are more stable in __________________.
a)
bonds
b)
formulas
c)
reactions
d)
compounds
5.
Atoms gain lose, gain, or ______electrons to get a stable outer energy level.
a)
share
b)
split
c)
create
d)
destroy
6.
A ____________is the force that holds atoms together in a compound.
a)
Chemical Formula
b)
Chemical Reaction
c)
Chemical Bond
d)
Synthesis Reaction
7.
A _______ is a charged particle because it has more or fewer electrons than protons. When an atom _____ an electron, it becomes a positively charged ion. When an atom ____an electron, it becomes a negatively charged ion.
a)
isotope, gains, loses
b)
isotope, loses, gains
c)
ion, loses, gains
d)
ion, gains, loses
8.
An ionic compound is held together by the _______--the force of attraction between opposite charges of the atoms.
a)
Covalent Bond
b)
Ionic Bond
c)
Synthetic Bond
d)
Molecular Bond
9.
The result of this bond is a _________compound.
a)
neutral
b)
polar
c)
positively charged
d)
negatively charged
10.
The sum of the charges on the ions in a unit of the compound is ___________.
a)
positive
b)
negative
c)
zero
d)
±1
11.
__________are neutral particles formed as result of sharing electrons.
a)
Protons
b)
Electrons
c)
Molecules
d)
Ions
12.
A ________is the force of attraction between atoms sharing electrons.
a)
Synthetic Bond
b)
Ionic Bond
c)
Molecular Bond
d)
Covalent Bond
13.
Atoms can form double or triple ______depending on whether they share two or three pairs of electrons.
a)
Molecules
b)
Bonds
c)
Compounds
d)
Elements
14.
Electrons shared in a molecule are held ________to the atoms with the larger nucleus.
a)
more closely
b)
relative
c)
adjacent
d)
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