WorksheetsUnit #4: Chemical Bonding Exam
Total questions: 22
Worksheet time: 56mins
Ionic bonds form between a
metal and nonmetal
nonmetal and nonmetal
metal and metal
cannot be determined
An anion is created when
an element loses a valence electron or electrons(s).
an element gains a valence electron or electrons(s).
an element loses a proton.
an element gains a proton.
A cation is created when
an element loses a valence electron or electrons(s).
an element gains a valence electron or electrons(s).
an element loses a proton.
an element gains a proton.
In a nonpolar covalent bond, electrons are
Located in a mobile “sea” shared by many atoms
Shared unequally by two atoms
Shared equally by two atoms
Transferred from one atom to another
The chemical bonding in magnesium hydroxide, Mg(OH)2, is classified as
covalent only
Both covalent and metallic
Both ionic and covalent
Ionic only
Both ionic and metallic
The polarity of a chemical bond in a compound can be determined by finding the difference in the
Atomic masses of the bonded atoms
Melting points of the elements in the compound
Symmetry of the molecule.
Electronegativities of the bonded atoms
A covalent bond is formed between a
nonmetal and nonmetal
metal and metal
cation and anion
metal and nonmetal
Which type of bond has an unequal sharing of electrons?
Polar Covalent
Non Polar Covalent
Ionic
Metallic
Which type of bonding is present when valence electrons move within the substance?
Metallic
Ionic
Polar Covalent
Non Polar Covalent
What is the chemical name for washing soda, Na2(CO3).
(a)
What is the chemical name of the compound: Ni3(PO4)2?
(a)
Two atoms with an electronegativity difference of 2.1 form a bond that is
ionic, because electrons are shared
ionic, because electrons are transferred
covalent, because electrons are shared
covalent, because electrons are transferred
When ionic bonds are formed, metals tend to
lose electrons and become negative ions
lose electrons and become positive ions
gain electrons and become negative ions
gain electrons and become positive ions
metals are not involved in ionic bonding, only in covalent
How many atoms do you have of each element in NaC2H3O2 ?
(Be sure to write the full name of each element.)
(a)
How many atoms do you have of each element in Be(OH)2 ?
(Be sure to write the full name of each element.)
(a)
What is the correct formula for the polyatomic ion called dichromate?
CO32–
Cr2O72–
CrO42–
CrO3–
What type of bond is depicted in the image?
Non Polar Covalent
Polar Covalent
Ionic
Metallic
Which of the following pairs form a polar covalent bond?
Calcium and Chlorine
Carbon and Oxygen
Hydrogen and Hydrogen
Sodium and Nitrogen
According to the octet rule, all atoms want to have _____ electrons in their outer shell.
1
2
8
18
What charge will potassium have when it becomes an ion?
(a)
H2O is classified as having _______ bonds.
Ionic
Polar Covalent
Non Polar Covalent
Metallic
Which of the following will form a nonpolar covalent bond?
phosphorous and silicon
arsenic and chlorine
iron and carbon
silicon and fluorine
