Chemical Bonding

June 2015 6: At STP, which substance has metallic bonding?

• ammonium chloride

• barium oxide

• iodine

• silver

August 2015 #39: What is the number of pairs of electrons shared in a molecule of N2?

• 1

• 2

• 3

• 6

June 2004 #13: Compared to the physical and chemical properties of the compound NO2, the compound N2O has

• Different physical properties and different chemical properties

• Different physical properties and the same chemical properties

• The same physical properties and different chemical properties

• The same physical properties and the same chemical properties

August 2016 #7: Which diatomic molecule is formed when the two atoms share six electrons?

• H2

• N2

• O2

• F2

August 2016 #8: Which formula represents a polar molecule?

• O2

• CO2

• NH3

• CH4

Tags

NGSS.HS-PS1-1

June 2017 #13: Compared to a potassium atom, a potassium ion has

• A smaller radius

• A larger radius

• Fewer protons

• More protons

June 2015 #9: What occurs when two fluorine atoms react to produce a fluorine molecule?

• Energy is absorbed as a bond is broken

• Energy is absorbed as a bond is formed

• Energy is released as a bond is broken

• Energy is released as a bond is formed

Tags

NGSS.HS-PS1-4

June 2015 #35: Which Lewis electron-dot diagram represents a fluoride ion?

• F with eight valence electrons, and a negative charge

• F with seven valence electrons and a negative charge

• F with eight valence electrons

• F with seven valence electrons

Tags

NGSS.HS-PS1-1

June 2013 #10: In a bond between an atom of carbon and an atom of fluorine, the fluorine atom has a

• weaker attraction for electrons

• stronger attraction for electrons

• smaller number of first-shell electrons

• larger number of first-shell electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

June 2017 #12: Which substance has nonpolar covalent bonds?

• Cl2

• SO3

• SiO2

• CCl4