Chemistry Quiz: Metals, Nonmetals, Metalloids

What are the general properties of metals?

• Low electrical and thermal conductivity, malleability, ductility, and luster

• High electrical and thermal conductivity, malleability, ductility, and luster

• Low electrical and thermal conductivity, brittleness, opacity

• High electrical and thermal conductivity, brittleness, ductility, and luster

How do metals conduct electricity?

• By releasing sound energy

• By absorbing heat energy

• By emitting light energy

• Movement of free electrons within their structure

What are the general properties of nonmetals?

• Excellent conductors of heat and electricity, very high melting and boiling points, and ductile in solid form

• Moderate conductors of heat and electricity, average melting and boiling points, and malleable in solid form

• Poor conductors of heat and electricity, low melting and boiling points, and brittle in solid form

• Good conductors of heat and electricity, high melting and boiling points, and flexible in solid form

Why do nonmetals tend to gain electrons?

• They have fewer electrons in their outermost energy level and gaining electrons allows them to achieve a stable electron configuration.

• They have the same number of electrons in their outermost energy level as metals, so they need to gain electrons to become stable.

• Nonmetals do not tend to gain electrons, they actually lose electrons to achieve stability.

• They have more electrons in their outermost energy level and gaining electrons allows them to achieve a stable electron configuration.

What are the general properties of metalloids?

• Intermediate properties between metals and nonmetals

• Highly reactive with water

• Completely non-reactive

• Only found in gaseous state

How do metalloids behave in terms of conductivity?

• Highly conductive

• Semiconductors

• Insulators

• Superconductors

Determine the hybridization of the molecular structure of methane (CH4).

• sp2

• d2sp3

• sp

• sp3

Determine the hybridization of the molecular structure of ammonia (NH3).

• sp3

• sp6

• sp4

• sp2

Balance the chemical equation: H2 + O2 -> H2O

• H2O2 -> H2 + O2

• H2 + O2 -> 2H2O

• H2 + O2 -> H2O2

• 2H2O -> H2 + O2

Balance the chemical equation: Na + Cl2 -> NaCl

• Na + Cl2 -> Na2Cl

• Na + Cl2 -> Na2Cl2

• Na + Cl2 -> 2NaCl

• Na + Cl2 -> NaCl2