Bonding Practice Test

When a chemical bond is broken, enegy is a. absorbed, only b. released, only c. both d. neither

A. absorbed, only

Which substance contains metallic bonds? a. Hg(l) b. H2O(l) c. NaCl(s) d. C6H12O6(s)

a. Hg(l)

Based on your reference tables, the atoms of which of these elements have the strongest attraction for electrons in a chemical bond? a. N b. Na c. P d. Pt

a. N

Which formula represents an ionic compound? a. NaCl b. N2O c. HCl d. H2O

a. NaCl

Which substance contains particles held together by metallic bonds? a. Ni(s) b. Ne(s) c. N2(s) d. I2(s)

a. Ni(s)

A substance that does not conduct electricity as a solid but does conduct electricity when melted is most likely classified as a. an ionic compound b.a molecular compound c. a metal d. a nonmetal

a. an ionic compound

The relatively high boiling point of water is due to water having a. hydrogen bonding c. metallic boding c nonpolar covalent bonding c. strong ionic bonding

a. hydrogen bonding

Which intermolecular force of attraction accounts for the relatively high boiling point of water? a hydrogen bonding b. covalent bonding c. metallic bonding c. ionic bonding

a. hydrogen bonding

The bonds between hydrogen and oxygen in a water molecule are classifed as a. polar covalent b. nonpolarcovalent c. ionic d. metallic

a. polar covalent

Which type of bond is present in a water molecule? a. polar covalent b. nonpolar covalent c. ionic d. electrovalent

a. polar covalent

Which kind of energy is stored in a chemical bond? a. potential b. kinetic c. activaton d. ionization

a. potential energy

In a nonpolar covalent bond, electrons are a. shared equally by two atoms b. shared unequally by two atoms c. transferred from one atom to another d. located in a mobile "sea" of many electrons

a. shared equally by two atoms

When calcum chloride is dissolved in water, to which end of the adjacent water molecules will a calcium ion be attracted? a. the oxygen end, which is the negative pole b. the oxygen end, which is the positive pole c. the hydrogen end, which is the negative pole d. the hydrogen end, which is the positive pole

a. the oxygen end, which is the negative pole

Which pair of elements below will form a compound with the greatest ionic character? a. Pb and F b. Ca and O c. Na and Cl d. Cs and N

b. Ca and O

A solid subsance was tested in the laboratory. The test results are listed below. *dissolves in water *is an electrolyte *melts at a high temperature Based on these results, the solid substance could be a. Cu b. CuBr2 c.C d. C6H12O6

b. CuBr2

In which system do molecule-ion attractions exist? a. KCl(s) b. KCl(aq) c. KCl(l) d. KCl(g)

b. KCl(aq)

Which compound would most likely have the greatest ionic character? a. CO b. KF c. CaO d. LiH

b. KF

Which of the following solids has the highest melting point? a. H2O(s) b.Na2O(s) c. LiCl(s) d. CO2(s)

b. Na2O(s)

Metallic bonding occurs between atoms of a. sulfur b. copper c. fluorine d. carbon

b. copper

Which type of bonding is usually exhibited when the electonegativity difference between two atoms is 1.1? a. ionic b. covalent c. metallic d. network

b. covalent

Which terms describe a substance that has a low melting point and a poor electrical conductivity? a. covalent and metallic b. covalent and molecular c. ionic and molecular d. ionic and metallic

b. covalent and molecular

Which particles may be gained, lost or shared by an atom when it forms a chemical bond? a. protons b. electrons c. neutrons d. nucleons

b. electrons

The electrons in a bond between two iodine atoms (I2) are shared a. equally, and the resulting bond is polar b. equally, and the resulting bond in nonpolar c. unequally, and the resulting bond is polar d. unequally, and the resulting bond in nonpolar

b. equally and the resulting bond in nonpolar

Which element has atoms with the greatest attraction for electrons in a chemical bond? a. beryllium b. fluorine c. lithium d. oxygen

b. fluorine

Hydrogen bonds are formed between molecules in which hydrogen is covalently bonded to an element having a. low electronegativity b. high electronegativity c. low ionization energy d. high atomic mass

b. high electronegativity

The primary forces of attraction between water molecules in H2O(l) are a. ionic bonds b. hydrogen bonds c. molecule-ion attractions d. van der Waals forces

b. hydrogen bonds

Which type of bond results when one or more valence electrons are transferred from one atom to another? a. hydrogen bond b. ionic bond c. nonpolar covalent bond d. polar covalent bond

b. ionic bond

When combining with nonmetallic atoms, metallic atoms generally will a. lost electrons and form negative ions b. lose electrons and form positive ions c. gain electrons and form negative ions d. gain electrons and form positive ions

b. lose electrons and form positive ions

When sodium and fluorine combine to produce the compound NaF, the ions formed have the same electron configuration as atoms of a. argon, only b. neon, only c. both d. neither

b. neon

Which compound contains ionic compounds? a. NO b. NO2 c. CaO d. CO2

c. CaO

Which statement explans why H2O has a higher boiling point than N2? a. H2O has a greater molar mass than N2 B. H2O has less molar mass than N2 c. H2O has stronger intermolecular forces than N2 d. H2O has weaker intermolecular foreces than N2

c. H2O has stronger intermolecular forces than N2

Which sample is composed of particles arranged in a regular geometric pattern? a. Cl2(g) b. CCl4(l) c. LiCl(s) d. LiCl(aq)

c. LiCl(s)

The bond between Br atoms in a Br2 molecule is a. ionic and is formed by the sharing of two valence eletrons b. ionic and is formed by the transfer of two valence electrons c. covalent and is fomed by the sharing of two valence electrons d. covalent and is formed by teh transfer of two valence electrons

c. covalent and is formed by the sharing of two valence electrons

The degree of the polarity of a chemical bond in a molecule of a compound can be predicted by determining the difference in the a. melting points of the elements in the compound b. densities of the elements in the compound c. electronegativities of the bonded atoms in a molecule of the compound d. atomic masses of the bonded atoms in a molecule of the compound

c. electronegaivities of the bonded atoms in a molecule of the compound

Which term indicates how strongly an atom attracts the electrons in a chemical bond? a. alkalinity b. atomic mass c. electronegativity d. activation energy

c. electronegativity

Which type of bond is found in sodium bromide? a. colvalent b. hydrogen c. ionic d. metallic

c. ionic

Which atoms are most likely to form covalent bonds? a. metal atoms that share electrons b. metal atoms that share protons c. nonmetal atoms that share electrons d. nonmetal atoms that share protons

c. nonmetal atoms that share electrons

Based on electronegitivity values, which type of elements tends to have the greatest attraction for electrons in a bond? a. metals b. metalloids c. nonmetals d. noble gases

c. nonmetals

Which electrons are represented by all of the dots? a. the carbon valence electrons, only b. the hydrogen valence electrons, only c. the carbon and hydrogen valence electrons d. all of the carbon and hydrogen electrons

c. the carbon and hydrogen electrons

The nitrogen atoms in a molecule of N2 share a total of a. one pair of electrons b. one pair of protons c. three pairs of electrons d. three pairs of protons

c. three pairs of electrons

What is tbe total number of electrons shared in a double covalent bond? a. 1 b. 2 c. 3 d. 4

d. 4

What is the maximum number of covalent bonds that a carbon atom can form? a. 1 b. 2 c. 3 d. 4

d. 4

Which symbol represents an atom in the ground state with the most stable valence electron configuration? a. B b. O c. Li d. Ne

d. Ne

A chemical bond results when two nuclei have a simultaneous attraction for a. nucleons b. protons c. neutrons d. electrons

d. electrons

The transfer of electrons from sodium atoms to chlorine atoms results in the formation of a. coordinate covalent bonds b. polar covalent bonds c. nonpolar bonds d. ionic bonds

d. ionic bonds

The bonds in BaO are best described as a. covalent, because valence electrons are shared b. covalent, because valence electrons are transferred c. ionic, because valence electrons are shared d. ionic, because valence electrons are transferred

d. ionic, because valence electrons are transferred

Which type of bonding involves positive ions immersed in a sea of mobile electrons? a. ionic b. nonpolar cvaent c. polar covalet d. metallic

d. metallic

A solid substance is an excellant conductor of electricity. The chemical bonds in this substance are most likely a. ionic, because the valence electrons are shared between atoms b. ionic, ecause the valence electrons are mobile c. metallic, because the valence electrons are stationary d. metallic, because the valence electrons are mobile

d. metallic, because the valence electrons are mobile

Covalent bonds are formed when electrons are a. transferred from one atom to another b. captured by the nucleus c. mobile within a metal d. shared between two atoms

d. shared between two atoms