QUIZ 2.2 - PROPERTIES OF IONIC AND COVALENT COMPOUNDS

The structure normally associated with ionic bonding is __________

• a crystal lattice.

• a simple molecule.

• a giant molecule.

• a regular arrangement of ions surrounded by a sea, or cloud, of electrons.

Tags

NGSS.HS-PS1-3

Why does sodium chloride not conduct electricity in its solid form?

• Ions in its structure are in fixed positions.

• It contains no free electrons.

• It has a giant covalent molecular structure.

• Ions in its structure only have single negative and single positive charges.

Which of the following does not explain a substance displaying a high melting point?

• Strong intermolecular forces between molecules.

• Many strong covalent bonds.

• Strong electrostatic attraction between oppositely charged ions.

• Strong electrostatic attraction between positive ions and delocalized electrons

Tags

NGSS.HS-PS1-3

Which of the following does not contain ionic bonds?

• Sulfur dioxide

• Silver oxide

• Sodium oxide

• Strontium oxide

Which of the following is not a property of substances with ionic bonding?

• High melting point

• Conduct electricity when molten

• ability to form into crystal

• Conduct electricity in the solid state

Tags

NGSS.HS-PS1-1

Which of the following statements about water is not correct?

• Water molecules contain covalent bonds.

• Water has weak forces between molecules.

• Water has a low melting point.

• Water molecules contain H+ and OH- ions

Tags

NGSS.HS-PS3-4

Which of the following gives the best explanation for why a substance does not conduct electricity?

• The bonding in the substance is not ionic.

• The bonding model in the substance does not have free electrons.

• The bonding model does not have ions which are free to move, or free electrons.

• The bonding model does not have ions or free electrons.

Tags

NGSS.HS-PS2-6

Which is a property shared by most covalent compounds?

• high boiling point

• low melting point

• high melting point

• good conductor of heat and electricity

Tags

NGSS.HS-PS1-1

Covalent (molecular) compounds do not conduct electricity because they ________________

• break up into ions.

• do not dissolve in water.

• do not break up into ions.

• have high melting points.

Tags

NGSS.HS-PS2-6

Which of the following statements contrasting covalent bonds and ionic bonds is correct?

• Covalent bonds usually involve two nonmetals and ionic bonds usually involve two metals.

• Covalent bonds usually involve two metals and ionic bonds usually involve a metal and a nonmetal.

• Covalent bonds usually involve a metal and a nonmetal and ionic bonds usually involve two nonmetals

• Covalent bonds usually involve two nonmetals and ionic bonds usually involve a metal and a nonmetal