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WorksheetsChem Ch 7 bonds
Total questions: 45
Worksheet time: 23mins
When atoms bond, they gain __________.
stability
mass
energy
electrons
An atom becomes more stable by bonding with another atom if the resulting electron configuration is more like that of what group of elements?
alkali metals
noble gases
halogens
metalloids
Which of the following is a nonpolar covalent compound?
NaCl
Br2
HCN
Au
Which of the following values for EN would represent a bond that is mostly ionic?
0.8
2.0
2.4
3.2
In order to achieve an octet when combining with potassium, an atom of a Group 16 (6A) element would be expected to __________ electrons.
lose
gain
share
This cannot be determined from the given information.
The ratio of cations to anions in an ionic compound is expressed in a chemical formula known as a(n) __________ unit.
molecular
formula
atomic
proportional
An orderly arrangement of ions in a three-dimensional pattern within a compound is called a(n)
formula unit.
ion array.
crystal lattice.
ionic network.
Because most metals have __________, they are most likely to freely share electrons when bonding with each other.
high electronegativities
large atomic radii
the ability to conduct electricity
low electron affinities
A mixture of atoms from multiple metals which has metallic properties is called a(n) __________.
metalloid
network
alloy
electron sea
When atoms bond, they will seek a higher, more stable energy state.
true
false
Diatomic molecules such as I2 exhibit ionic bonding.
true
false
The compound Na2O exhibits ionic bonding.
true
false
Some, but not all, covalent molecules exhibit polarity.
true
false
Because of its high electronegativity, a molecule of fluorine is polar.
true
false
Completely nonpolar bonds exist.
true
false
Within a molecule, the atom that exerts a greater pull on the electrons has a partial positive charge.
true
false
Covalently bonded compounds contain one or more pairs of shared electrons
true
false
Hydrogen forms many covalent bonds by achieving a stable octet of electrons.
true
false
When sodium and chlorine combine to form NaCl, a great amount of energy is released.
true
false
Ionic compounds are not made of distinct molecules as are covalent compounds
true
false
Metallic bonding is characterized by a loose transfer of electrons between two atoms.
true
false
Some covalent substances occur as relatively hard, brittle crystals with high melting points, glassy lusters, and unusual electrical properties.
true
false
Ionic compounds are more likely than covalent compounds to fracture along cleavage lines.
true
false
Ionic compounds have considerably lower boiling points than polar covalent compounds.
true
false
Solid ionic substances conduct electricity easily.
true
false
The molecular shape of a chemical affects a medication’s ability to relieve suffering.
true
false
predict the predominant type of bonding associated with each of the following CsI
covalent
ionic
metallic
Predict the predominant type of bonding associated with each of the following: electron-sea theory
covalent
ionic
metallic
Predict the predominant type of bonding associated with each of the following: CCl4
covalent
ionic
metallic
Predict the predominant type of bonding associated with each of the following: (PO4)3-
covalent
ionic
metallic
Predict the predominant type of bonding associated with each of the following: attraction between oppositely charged ions
covalent
ionic
metallic
Predict the predominant type of bonding associated with each of the following: I2
covalent
ionic
metallic
Predict the predominant type of bonding associated with each of the following: Fe3Al
covalent
ionic
metallic
Predict the predominant type of bonding associated with each of the following: Na2O
covalent
ionic
metallic
Predict the predominant type of bonding associated with each of the following: one or more pairs of shared electrons
covalent
ionic
metallilc
Predict the predominant type of bonding associated with each of the following: Zn
covalent
ionic
metallic
Return all unused chemicals to their original containers.
true
false
All chemicals in the lab are to be considered dangerous.
true
false
Never leave a lit burner unattended.
true
false
Chipped or cracked glassware is okay to use.
true
false
Does cesium (Cs) lose or gain electrons?
lose
gain
neither
Does argon (Ar) lose or gain electrons?
lose
gain
neither
Does boron (B) lose or gain electrons?
lose
gain
neither
Does fluorine (F) lose or gain electrons?
lose
gain
neither
Does beryllium (Be) lose or gain electrons?
lose
gain
neither
