Physical Science Quiz

Which of the following molecules has a net dipole moment?

• CO2
• CH4
• H2O
• O2

Which of the following molecules is non-polar?

• NH3
• CO2
• CH3OH
• H2SO4

Which of the following is an example of a polar molecule?

• N2
• H2
• HCl
• O3

Which of the following intermolecular forces of attraction is responsible for the high boiling point of water?

• London dispersion forces
• Dipole-dipole forces
• Hydrogen bonding
• Ion-dipole forces

Which of the following substances is most likely to dissolve in a non-polar solvent?

• Sodium chloride
• Ethanol
• Hexane
• Acetic acid

Which of the following is NOT an example of element transmutation?

• The decay of uranium-238 to lead-206
• The fusion of hydrogen to form helium in the sun
• The production of technetium-99 in a nuclear reactor
• The decay of carbon-14 to nitrogen-14 in living organisms

What is the name of the process by which heavier elements decay into lighter elements?

• Nuclear fission
• Nuclear fusion
• Alpha decay
• Beta decay

Which of the following statements is true about nuclear fusion?

• It occurs at very high temperatures and pressures
• It results in the formation of heavier elements
• It releases energy
• All of the above

Which of the following substances is NOT a polar solvent?

• Watern (H20)
• Methanol (CH3OH)
• Ethanol (C2H5OH)
• Hexane (C6H14)

What is the molecular geometry of a molecule with two bonding pairs and no lone pairs of electrons?

• Linear
• Trigonal planar
• Tetrahedral
• Bent