AP Chemistry-Bonding

Atomospheric methane is a potent greenhouse gas. The concentration of methane in Earth's atmosphere in 1998, expressed as a mole fraction, was 1745 nmol/mol ppb. By 2008, however, global methane levels, which had stayed mostly flat since 1998, had risen to 1800 nmol/mol. Which of the following best describes the type of bonding in a sample of CH4(g)?

• Strong single covalent bonds with weak intermolecular forces
• strong multiple covalent bonds, including pi bonds, with weak intermolecular forces
• closely packed lattice with delocalized electrons throughout
• macromolecules held together with strong polar bonds

Which of the following species does not contain a pi bond?

• CO2
• C2H4
• CN-
• CH4

The geometry of the SO3 molecule is best described as

• trigonal planar
• trigonal pyramidal
• square pyramidal
• tetrahedral

Which of the following best describes solid silicon dioxide, SiO2?

• A network solid with covalent bonding
• a molecular solid with zero dipole moment
• An ionic solid
• A metallic solid

Tags

NGSS.HS-PS1-3

Which of the following molecules has the largest dipole moment?

• CO2
• H20
• CH4
• PH3

The following diagrams represent the particle composition of a weak aqueous acid, HX. Note that excess water molecules are not shown. Which of the following diagrams best represents the particle composition of an aqueous solution of HX?

• Beaker A
• Beaker B
• Beaker C
• Beaker D

The interaction energy of two hydrogen atoms is shown on the graph above. Which of the answer choices displayed on the graph best represents the bond length of the H2 molecule?

• A
• B
• C
• D

Tags

NGSS.HS-PS1-4

Of the following molecules, which has the largest dipole moment?

• CO
• CO2
• O2
• HF

Tags

NGSS.HS-PS1-1

Which of the following best describes the type of bonding in a sample of CO2(s)

• A lattice of positive and negative ions held together by electrostatic forces
• Strong multiple covalent bonds, including pi bonds, with weak intermolecular forces
• Strong single covalent bonds with weak intermolecular forces
• Macromolecules held together with strong polar bonds

Which of the following elements combines with oxygen to form a covalent network solid?

• Si
• S
• C
• Mg