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WorksheetsChem Ch.7/8 Finals Review
Total questions: 20
Worksheet time: 10mins
When atoms gain electrons, the ion has a ...
positive charge (cation)
positive charge (anion)
negative charge (cation)
negative charge (anion)
Nonmetals tend to form...
cations
anions
nonmetals do not form ions
How many electrons are normally present in the outer shell of an atom with a noble gas configuration?
2
6
8
10
Molecular compounds are represented by a chemical formula known as ...
a molecular formula
a formula unit
a structural formula
an ionic formula
Metallic substances are best described as
anions in a sea of mobile valence electrons
cations in a sea of mobile valence electrons
covalently bonded groups of aoms
covalently bonded groups of atoms with a charge
A molecule is drawn containing a triple bond. How many electrons are shared?
2
4
6
7
Which of the following is an exception to the octet rule? (you may want to draw these)
HCl
SCl2
BrCl
BeCl2
What is the shape of the molecule H2S?
trigonal planar
linear
bent
pyramidal
What is the shape of the molecule H2O?
trigonal planar
linear
bent
pyramidal
A molecule contains a bond between a carbon atom and a chlorine atom. Carbon has an electronegativity of 2.5 and chlorine has and electronegativity of 3.0. What type of bond is formed?
polar
nonpolar
ionic
metalic
A linear molecule consisting of two atoms contains 1 polar bond. What type of molecule is it?
polar
nonpolar
A linear molecule consisting of three atoms contains 2 polar bonds. The bonds are arranged such that each end of the molecule is slightly negative while the central atom is slightly positive. What type of molecule is it?
polar
nonpolar
Which substance would have stronger intermolecular forces?
A substance composed of small nonpolar molecules
A substance composed of large nonpolar molecules
Which substance would have stronger intermolecular attractive forces?
a substance composed of nonpolar molecules
a substance composed of polar molecules
What is the name for the ion Pb+2
iron
iron (II)
lead
lead (II)
What is the name of the ion Ca+2
cobalt
cobalt (II)
calcium
calcium (II)
what is the name for the ion O-2
oxygen
oxide
oxygen (II)
oxide (II)
What is the name for the ion Br-1
bromine
bromide
bromine (I)
bromide (I)
What is the chemical formula for calcium chloride?
CaCl
CaCl2
Ca2Cl
Ca2Cl2
What is the chemical formula for barium nitride
BaN
Ba2N3
Ba3N2
Ba2N2
