AnswersChemistry - SC3210 A-CRTypes of Chemical Bonds

Types of Chemical Bonds Answers

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Which statement explains why the bonds between nonmetals tend to be covalent?

A
The bonds are found to be nondirectional.
B
They have large differences in electronegativity.
C
They have small differences in electronegativity.
D
They have ions that produce an electrostatic pull.
2
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How is electronegativity related to covalent bonding?

A
Atoms must have similar electronegativities in order to share electrons in a covalent bond.
B
Atoms must have very different electronegativities in order to transfer electrons in a covalent bond.
C
Atoms must have similar electronegativities in order to transfer electrons in a covalent bond.
D
Atoms must have very different electronegativities in order to share electrons in a covalent bond.
3

Which type of substances have chemical bonds that are not directional and valence electrons that move freely between the atoms?

A
halogens
B
nonmetals
C
metals
D
salts
4

Which statement describes the valence electrons in ionic bonds?

A
They are shared equally between two atoms.
B
They are shared unequally between two atoms.
C
They are shared among many atoms.
D
They are transferred from one atom to another.
5

Sugar is made up of clear, colorless crystals that dissolve easily in water, but the crystals and their solution do not conduct electricity. Which statement describes sugar?

A
It is made up of atoms that are held together by metallic bonds.
B
It is made up of atoms that are held together by covalent bonds.
C
It is made up of atoms that are held together by weak ionic bonds.
D
It is made up of atoms that are held together by strong ionic bonds.
6

Which interaction is responsible for the force of attraction between the particles in a salt crystal?

A
proton-proton
B
proton-electron
C
neutron-electron
D
electron-electron
7

Consider the location of barium, chlorine, iodine, and strontium on the periodic table.ElectronegativitiesWhich type of atom has the strongest attraction for electrons in bond formation?

Question illustration
A
barium (Ba)
B
chlorine (Cl)
C
iodine (I)
D
strontium (Sr)
8

Which statement describes how the bond between two oxygen atoms is formed?

A
by sharing valence electrons with many other atoms
B
by the repulsion between ions of like charges
C
by the attraction of two oppositely charged ions
D
by sharing valence electrons between the two atoms
9

Which of these is a property of a substance that is composed of atoms that are held together by metallic bonds?

A
It has a low melting point.
B
It can be flattened and bent.
C
It cannot be shaped into wires.
D
It does not conduct electricity.
10

The incomplete table below shows selected properties of compounds that have ionic, covalent, or metallic bonds.RowBondElectrical conductivityLikely property1IonicYesHigh melting point2?Yes?3?No?Which information would best fill the blanks in row 3?

A
metallic bond and low melting point
B
metallic bond and high melting point
C
covalent bond and low melting point
D
covalent bond and high melting point

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