8th Chapter 4 Chemical Bonds Question Preview (ID: 16644)
Review Material For Chapter 4: Chemical Bonds.
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Which of the following conducts electricity?
a) sugar crystals
b) salt crystals
c) sugar dissolved in water
d) salt dissolved in water
Which type of the following describes a covalent bond?
a) Atoms equally share one or more pairs of electrons
b) Atoms transfer one or more pairs of eletrons
c) alternating ions that are oppositely charged
d)
Which molecule is held together by a covalent bond?
a) Cl2
b) NaCl
c) MgO
d) CaO
Which of the following properties causes the mineral halite to break apart along a flat face?
a) hardness
b) Color
c) alternating positive and negative ions
d) covalently bonded atoms
What is an atom or group of atoms called when it holds an electrical charge?
a) compound
b) crystal
c) ion
d) neutron
An ionic bond forms when
a) two atoms share electrons
b) two atoms lose electrons
c) two atoms gain electrons
d) an electron is transferred between two atoms
How many sodium ions (Na+) are needed to balance the charge on a hydroxide ion (OH-)
a) 1
b) 2
c) 3
d) 4
An orderly 3-D arrangement of particles is a(n)
a) atom
b) ion
c) crystal
d) molecule
What type of ions are composed of more than one atom?
a) Covalent
b) Molecular
c) Polar
d) Polyatomic
What type of bond shares 4 electrons?
a) Single bond
b) Double bond
c) Triple bond
d) Quadruple bond
When an atom loses an electron, it
a) becomes a negative ion
b) becomes a positive ion
c) forms a covalent bond
d) gains protons
Which of these is a property of an ionic compound?
a) low melting point
b) poor conductor of electricity
c) crystal shape
d) shared electrons
A bond in which a pair of electrons is shared between two atoms is called
a) ionic
b) covalent
c) polyatomic
d) triple bond
Fluorine atoms can not form a double or triple bond because flourine
a) is a nonmetal
b) strongly attracts electrons
c) has 7 valence electrons
d) is a gas at room temperature
An ionic crystal splits along a face of
a) like charges
b) unlike charges
c) molecules
d) random ions
The force of the attraction of electrons to the atom is measured by
a) AMUs
b) Kilowatts
c) moles
d) Paulings
When one nitrogen atoms joins with another the result is a
a) single bond
b) double bond
c) triple bond
d) ionic bond
When nitrogen and hydrogen combine, the ratio of hydrogen atoms to nitrogen atoms in a molecule of the resulting compound is
a) 2 to 1
b) 3 to 1
c) 1 to 2
d) 1 to 1
Atoms of which pair of elements are most likely to form a polar covalent compound?
a) H and O
b) Na and O
c) Na and Cl
d) Cl and Cl
The correct symbol for an ION of oxygen is
a) O+
b) O2+
c) O-
d) O2-
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