WorksheetsSec 1,2,3 & 4 quiz
Total questions: 22
Worksheet time: 1hrs 18mins
An ionic bond results from electrical attraction between _____
cations and anions
atoms
dipoles
orbital
A nonpolar covalent bond is unlikely when two atoms of different elements join because the atoms are likely to differ in
density
state of matter
electronegativity
polarity
Bond length is the distance between two bonded atoms at
their minimum potential energy
heir maximum potential energy
their maximum kinetic energy.
one-half the diameter of the electron cloud.
To draw a Lewis structure, it is not necessary to know
which atoms are in the molecule
bond energies
the number of valence electrons for each atom
the number of atoms in the molecule
For multiple covalent bonds to form in molecules, the molecules must contain carbon, nitrogen, or
chlorine
hydrogen
oxygen
helium
The principle that states that atoms tend to form compounds in which each atom has eight electrons in its highest occupied energy level is called the___
rule of eights.
configuration rule
Avogadro principle
octet rule
A covalent bond in which the bonded atoms have an unequal attraction for the shared electrons is called a(n) (a) .
A covalent bond between two atoms produced by sharing two pairs of electrons is called a(n) (a) .
The energy required to break a chemical bond and form neutral isolated atoms is called (a) .
Use VESPR theory to predict the molecular shape of the following molecule:
Methan (CH4)
(a)
A molecule containing two atoms is called a(n) (a) .
The melting points of ionic compounds are higher than the melting points of molecular compounds because
ionic substances tend to vaporize at room temperature
ionic substances are brittle
attractive forces between ions are greater than the attractive forces between covalent molecules
the numbers of positive and negative charges are equal in an ionic compound.
Two atoms will likely form a polar covalent bond if the electronegativity difference is __________
0.1
1.0
2.5
4
In which of these compounds is the bond between the atoms is a polar covalent bond?
Cl2
H2
HCl
O2
According to VSEPR theory, what is the shape of a molecule of NBr3, it's a AB3E molecule ?
bent
trigonal-planar
tetrahedral
trigonal-pyramidal
The boiling point of water, H2O, is higher than the boiling point of hydrogen sulfide, H2S, because water molecules are ____
less polar and form hydrogen bonds
more covalent and form hydrogen bonds
ionic and form hydrogen bonds
more polar and form hydrogen bonds
Atoms that are bonded with an electronegativity difference of 0 to 0.3 are generally considered to be
negatively charged compounds.
nonpolar-covalent compounds
polar-covalent compounds
ionic compounds.
Use VESPR theory to predict the molecular shape of the following molecule:
carbon dioxide (CO2)
(a)
Orbitals of equal energy produced by the combination of two or more orbitals on the same atom are called ___
bonding orbitals
valence orbitals
hybrid orbitals
high-energy orbitals.
Which formula listed below represents a polyatomic ion?
HCO3–
H2SO4
Cl–
Na+
The structure of which of the following compounds suggests that it has the highest boiling point?
CH4
CO2
NaCl
O2
The VSEPR formula for a molecule of type AB2E2 tells you that the molecule is made up of
a central atom A, with two B atoms and two E atoms bonded to it.
a central atom A, with two B atoms bonded to it and two unshared electron pairs
a central atom A, with two B atoms bonded to it by two bonding electron pairs
two central atoms B, with an atom A and two atoms E bonded to it.
