Chemical Bonding Practice

The chemical bonding in sodium phosphate, Na₃PO₄, is classified as

• Metallic only

• Both covalent and metallic

• Both covalent and ionic

• Ionic only

The degree of polarity of a chemical bond in a molecule of a compound can be predicted by determining the difference in the

• Atomic masses of the bonded atoms in a molecule of the compound

• Melting points of the elements in the compound

• Symmetry of the molecule.

• Electronegativities of the bonded atoms in a molecule of the compound

A solid substance is an excellent conductor of electricity. The chemical bonds in this substance are most likely

• Ionic, because the valence electrons are shared between atoms

• Ionic, because the valence electrons are mobile

• Metallic, because the valence electrons are mobile

• Metallic, because the valence electrons are stationary

Which molecule has a nonpolar covalent bond?

• NH₃

• HCl

• H₂O

• H₂

Which elements will form an ionic compound?

• Na and Al

• Li and S

• Ca and Hg

• H and I

Bonds that form between two metals are called ______________ bonds.

• ionic 
• covalent
• metallic
• pervasive

Tags

NGSS.HS-PS1-3

Which substance contains bonds that involved the transfer of electrons from one atom to another?

• KBr

• CO₂

• Cl₂

• NH₃

A neutral atom with the electron configuration 2-6 would most likely form a bond with an atom having the configuration

• 2

• 2-2

• 2-8

• 2-8-8

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which compound has the least ionic character?

• AlCl₃

• CCl₄

• CaCl₂

• KCl

Tags

NGSS.HS-PS1-1

A substance that does not conduct electricity as a solid but does conduct electricity when dissolved is most likely classified as

• an ionic compound

• a nonmetal

• a metal

• a molecular compound