Answers26-27 CFISD TX-Chemistry A CRThe Historical Development of Atomic Theory

Types of Chemical Bonds Answers

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1
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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.
2
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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
3

Which statement is generally true about CaCl2?

A
It has only metallic bonds between the atoms.
B
It has only covalent bonds between the atoms.
C
Its bonds are formed by large differences in electronegativity.
D
Its bonds are formed by small differences in electronegativity.
4

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.
5

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.
6

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)
7

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.
8

What will most likely happen when two bromine atoms bond together?

A
The atoms will become less stable.
B
An ionic bond will hold them together.
C
A covalent bond will hold them together.
D
A metallic bond will hold them together.
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
11

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.
12

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
13

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
14

The periodic table below shows the electronegativity values of some elements.ElectronegativitiesConsider the positions of carbon, nitrogen, potassium, and calcium on the periodic table. The atoms of which element attract electrons most strongly in chemical bonds?

Question illustration
A
carbon (C)
B
calcium (Ca)
C
nitrogen (N)
D
potassium (K)
15

The table below shows the electronegativity values of various elements on the periodic table.ElectronegativitiesWhich pair of elements would form an ionic bond?

Question illustration
A
carbon (C) and oxygen (O)
B
strontium (Sr) and chlorine (Cl)
C
cesium (Cs) and germanium (Ge)
D
magnesium (Mg) and aluminum (Al)
16

Which statement best explains why a metal atom and a nonmetal atom are most likely to form an ionic bond?

A
Metal atoms have low ionization energy, and nonmetal atoms have high electronegativity, so electrons transfer easily from the nonmetal atom to the metal atom.
B
Metal atoms have low ionization energy, and nonmetal atoms have high electronegativity, so electrons transfer easily from the metal atom to the nonmetal atom.
C
Metal atoms have high ionization energy, and nonmetal atoms have low electronegativity, so electrons transfer easily from the nonmetal atom to the metal atom.
D
Metal atoms have high ionization energy, and nonmetal atoms have low electronegativity, so electrons transfer easily from the metal atom to the nonmetal atom.
17

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

A
It conducts electricity when in solid form.
B
It conducts electricity when in molten form.
C
It conducts electricity when it is dissolved in water.
D
It does not conduct electricity in any form.

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