WorksheetsSummer II Chemistry Final Review B
Total questions: 20
Worksheet time: 10mins
Which is a typical characteristic of an ionic compound?
Electron pairs are shared among atoms
The ionic compound has a low solubility in water
The ionic compound is described as a molecule
The ionic compound has a high melting point
Which of these elements does not exist as a diatomic molecule?
Ne
F
H
I
Why do atoms share electrons in covalent bonds?
to become ions and attract each other
to attain a noble-gas electron configuration
to become more polar
to increase their atomic numbers
Which elements can form diatomic molecules joined by a single covalent bond?
hydrogen only
halogens only
halogens and members of the oxygen group only
hydrogen and the halogens only
Which of the following diatomic molecules is joined by a double covalent bond?
O2
Cl2
N2
He2
How many electrons can occupy a single molecular orbital?
0
1
2
4
According to VSEPR theory, molecules adjust their shapes to keep which of the following as far apart as
possible?
pairs of valence electrons
inner shell electrons
inner shell electrons
he electrons closest to the nuclei
What causes water molecules to have a bent shape, according to VSEPR theory?
repulsive forces between unshared pairs of electrons
interaction between the fixed orbitals of the unshared pairs of oxygen
ionic attraction and repulsion
the unusual location of the free electrons
What are the weakest attractions between molecules?
ionic forces
Van der Waals forces
covalent forces
hydrogen forces
What causes hydrogen bonding?
attraction between ions
motion of electrons
sharing of electron pairs
bonding of a covalently bonded hydrogen atom with an unshared electron pair
What type of ions have names ending in -ide?
only cations
only anions
only metal ions
only gaseous ions
When Group 2A elements form ions, they ____.
lose two protons
gain two protons
lose two electrons
gain two electrons
What determines that an element is a metal?
the magnitude of its charge
the molecules that it forms
when it is a Group A element
its position in the periodic table
An -ate or -ite at the end of a compound name usually indicates that the compound contains ____.
fewer electrons than protons
neutral molecules
only two elements
a polyatomic anion
Why are systematic names preferred over common names?
Common names do not provide information about the chemical composition of the compound.
Common names are derived from the method used to obtain the compound.
Common names were assigned by the scientist who discovered the compound
Common names are not very descriptive.
How are chemical formulas of binary ionic compounds generally written?
cation on left, anion on right
anion on left, cation on right
Roman numeral first, then anion, then cation
subscripts first, then ions
Which of the following is true about the composition of ionic compounds?
They are composed of anions and cations.
They are composed of anions only
They are composed of cations only
They are formed from two or more nonmetallic elements.
Which of the following formulas represents an ionic compound?
CS2
BaI2
N2O4
PCl3
What type of compound is CuSO4 ?
monotomic ionic
polyatomic covalent
polyatomic ionic
binary molecular
Molecular compounds are usually ____.
composed of two or more transition elements
composed of positive and negative ions
composed of two or more nonmetallic elements
exceptions to the law of definite proportions
