Chemistry Review Chapter

An ionic bond results from electrical attraction between

• cations and anions

• atoms

• dipoles

• orbitals

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NGSS.HS-PS1-3

The charge on an ion is

• always positive

• always negative

• either positive or negative

• zero

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NGSS.HS-PS2-4

A nonpolar covalent bond is unlikely when 2 atoms of different elements join because the atoms are likely to differ in

• density

• state of matter

• electronegativity

• polarity

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

According to the octet rule, a calcium atom has a tendency to

• lose one electron

• lose two electrons

• gain one electron

• gain two electrons

Bond length is the distance between two boned atoms at

• their minimum potential energy

• their maximum kinetic energy

• their maximum potential energy

• one-half the diameter of the electron cloud

If a compound forms by ionic bonding, which is not true?

• A positively charged atom or group of atoms attracts a negatively charged atom or group of atoms.

• The net charge of the compound is zero.

• The compound contains just two atoms, each of opposite charge.

• Several ions group together in a tightly packed structure.

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NGSS.HS-PS1-3

To draw a Lewis structure, it is not necessary to know

• which atoms are in the molecule

• bond energies

• the number of valence electrons for each atom

• the number of atoms in the molecule

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NGSS.HS-PS1-1

The only property listed that is not characteristic of ionic compounds is

• high melting point

• hardness

• lack of crystal structure

• brittleness

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NGSS.HS-PS1-3

For multiple covalent bonds to form in molecules, the molecules must contain carbon, nitrogen, or

• chlorine

• hydrogen

• oxygen

• helium

Which formula listed below represents a polyatomic ion?

• HCO₃

• H₂SO₄

• Cl

• Na