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WorksheetsCh 6 Chemical Bonds
Total questions: 42
Worksheet time: 22mins
Typically, atoms gain or lose electrons to achieve ___________.
an exchange of energy
ionization
a stable electron configuration
vaporization
Which of the following groups contain three elements with stable electron configurations?
argon, neon, barium
helium, xenon, argon
lithium, krypton, argon
xenon, neon, boron
In an electron dot diagram, the symbol for an element is used to represent __________.
the nucleus
the nucleus and all electrons
the nucleus and valence electrons
the nucleus and all nonvalence electrons
Ionization energies tend to ______________.
decrease from left to right across a period
increase from left to right across a period
increase from the top of a group to the bottom
decrease from the bottom of a group to the top
Study the electron dot diagrams for lighium, carbon, fluorine, and neon. Choose the statement that correclty identifies the most stable of the elements.
Lithium is the most stable element because it has to lose only one electron to achieve a stable configuration.
Carbon is the most stable element because it can form four bonds.
Fluorine is the most stable element because it has to gain only one electron to achieve a stable configuration.
Neon is the most stable element because its highest occupied energy level is filled.
The formation of an ionic bond involves the ____________.
transfer of electrons
transfer of neutrons
transfer of protons
sharing of electrons
In the compound MgCl2, the subscript 2 indicates that _______.
there are two magnesium ions for each ion of chlorine
the chloride ion is twice the size of the magnesium ion
magnesium and chlorine form a double covalent bond
there are two chloride ions for each magnesium ion
Which of the following statements correctly describes the substance with the formula KI?
Molecules of potassium iodide contain one atom of potassium and one atom of iodine.
There is a one-to-one ratio of potassium ions to iodide ions
Potassium iodide is a molecular compound
Potassium iodide is a polyatomic ion
When two atoms of the same nonmetal react, they often form a/an _______.
ionic bond
diatomic molecule
polyatomic ion
polar molecule
Which of the following is a typical property of an ionic compound?
low melting point
poor conductor of electric current when melted
tendency to shatter when struck
all of the above
Which of the following comppounds does not contain molecules?
H2
CO2
NaCl
H2O
In a polar covalent bond, ______________.
electrons are shared equally between atoms
a cation is bonded to an anion
electrons are transferred between atoms
electrons are not shared equally between atoms
The water molecule H2O is polar because it contains two polar single bonds and _____________.
its molecule has a linear shape
molecules that contain polar bonds are always polar
its molecule has a bent shape
the attractions between water molecules are strong
Because water molecules are polar and carbon dioxide molecules are nonpolar, ________________.
carbon dioxide cannot exist as a solid
water has a higher boiling point than carbon dioxide does
water has a lower boiling point than carbon dioxide does
attractions between water molecules are weaker than attractions between carbon dioxide molecules
Water has a higher boiling point than expected because ______.
there is so much water vapor in the atmosphere
water molecules are not very massive
hydrogen and oxygen form single covalent bonds
of the strong attractions between polar water molecules
In the name carbon dioxide, the prefix of the second word indicates that a molecule of carbon dioxide contains ______.
two carbon atoms
two oxygen atoms
a polyatomic ion
an ionic bond
Fluorine, F, forms a binary ionic compound with lithium, Li. What is the name of this compound?
fluorine lithide
lithium fluoride
lithium fluorine
fluorine lithium
Beryllium, Be, and chlorine, Cl, form a binary ionic compound with a one-to-two ratio of beryllium ions to chloride ions. The formula for the compound is ____.
Be2Cl
BeCl2
2BeCl
Be2Cl2
In the binary ionic compound potassium bromide, KBr, the element that forms cations is _____________.
bromine
potassium
KBris the formula for an ionic compound. The fact that neither symbol is followed by a subscript means that there is a/an ______ ratio of ions in the compound
unbalanced
one-to-one
two-to-one
flawed
You are given the melting points of three unknown substances and asked to predict which is an ionic compound. You would select the compound with the _____ melting point.
lowest
highest
most upredictable
In the binary ionic compound lithium iodide, LiI, which element forms anions?
iodine
lithium
The molecules in compound XY are strongly polar, while the molecules in compoun AB are nonpolar. Which substance probably has the higher boiling poing?
AB
XY
In postssium bromide, KBr, which element forms anions?
K
Br
Neither K nor Br
Both K and Br
In an electron dot diagram, each dot represent a/an _____.
molecule
element
proton
valence electron
In an ionic compound, the attractions between cations and ______ hold the compound together.
protons
neutrons
anions
The chemical formula for calcium chloride, CaCl2, shows that the compound contains two __________ ions for every _________ ion.
calcium, chloride
chloride, calcium
The ions in solid sodium chloride are arranged in a structure called a/an _____.
polyatomic ion
crystal lattice
crystal rhombus
polyatomic rhombus
A polar covalent bond forms when ______ are not shared equally between atoms.
electrons
neutrons
protons
A/An _____ ion is a covalently bonded group of atoms that has a positive or negative charge.
alkali
acidic
poly-covalent
polyatomic
In ionic compounds, the sum of the charges of all the cations and anions must be _________.
positive
negative
zero
1+
In a periodic table that included electron dot diagrams, in whichh column would the diagram contain more dots ---- Group 2A (the alkaline metals) or Group 7A (the halogens)
Group 2A (the alkaline metals)
Group 7A (the halogens)
In an lectron dot diagram of rubidium, there is one dot. In an electron dot diagram of silicon, there are dour dots. Which element would you expect to be more reactive?
rubidium
silicon
Potassium, an alkali metal, and bromine, a halogen, are both in Period 4 of the periodic table. Which element has a higher ionization energy?
Potassium
Bromine
A type of bond that hold cations and anions together are ______.
covalent
polyatomic
ionic
crystals
A type of bond in which two atoms share a pair of valence electrons is a ________ bond.
nonexistent
permanent
ionic
covalent
A neutral group of atoms that are joined together by one or more covalent bonds is a _______.
polar bond
molecule
alloy
crystal
An ion with a negative charge is a/an ______.
anion
cation
formula
molecule
An ion with a positive charge is a/an _______.
formula
polar ion
cation
anion
A notation that shows what elements a compound contains and the ratio ofthe atoms or ions of these element in the compound are _____.
a bond
the covalent bond
a formula
an ionic bond
Solids whose particles ae arranged in a lattice structure are called _____.
polyhedrons
a rhombus
a crystal
a six sided platy
Water has a higher boiling point than carbon dioxide because attraction between polar molecules are ______ attractions between nonpolar molecules.
the same as
weaker than
stronger than
