Answers 25-26 KCS18 Chemistry ICTypes of Chemical Bonds

Ionic Bonding Answers

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Which pair of elements will form an ionic bond?

N and O

K and Br

C and Cl

Fe and Ni

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Which statement indicates that a substance may be an ionic compound?

It has a low melting point.

It is made up of molecules.

It can be flattened by a force.

It is made up of a crystal lattice.

Which pair of ions can form an ionic bond with each other and why?

Cu and Ag; They are both metal ions.

S and O; They have like charges.

Br and At; They are both halogen ions.

Li and Br; They have unlike charges.

Which statement describes a step in the formation of an ionic bond?

An attraction occurs between two ions that have the same charge.

A metal atom forms a cation, and a nonmetal atom forms an anion.

A more electronegative atom transfers electrons to a less electronegative atom.

A metal pulls electrons from another metal and produces a force of attraction.

Which statement correctly describes the phosphate ion, ?

It is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion.

It is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom.

It is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion.

It is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

Which property best indicates that a compound contains an ionic bond?

It is insoluble in water.

It can be easily flattened.

It has a low boiling point.

It conducts electricity when molten.

The diagram below shows the atoms involved in forming table salt.Which statement best describes what happens next?

Sodium becomes an anion by losing an electron to chlorine.

Chlorine becomes a cation by losing an electron to sodium.

Sodium becomes a cation by gaining an electron from chlorine.

Chlorine becomes an anion by gaining an electron from sodium.

Each model shows bonding between a pair of atoms.Model A Model BWhich statement best explains how the models differ?

Model A shows the formation of ions, and model B does not show the formation of ions.

Model A does not show the formation of ions, and model B shows the sharing of electrons.

Model A shows the sharing of electrons, and model B shows the formation of ions.

Model A shows the transfer of an electron, and model B shows the sharing of electrons.

Which of the following can easily form an ionic bond with a cation?

NH4+

PO43–

Which statement best describes how an ionic bond forms?

The transfer of electrons forms strong bonds between ions.

The sharing of electrons forms strong bonds between ions.

The transfer of electrons results in repulsive forces between molecules.

The sharing of electrons results in attractive forces between molecules.

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