A) Carbon B) Helium C) Iron D) Oxygen
A) CNO cycle B) Electron capture C) Triple-alpha process
A) A and B B) Neutron star C) Black hole D) White dwarf
A) Formation of elements inside stars B) Formation of molecules in space C) Formation of galaxies D) Destruction of stars
A) Carbon B) Helium C) Hydrogen D) Oxygen
A) Supernova B) Red giant C) Main sequence D) White dwarf
A) White dwarf B) Red giant C) Neutron star D) Black hole
A) Carbon B) Hydrogen C) Helium D) All of the above
A) Corona B) Atmosphere C) Crust D) Core
A) Symmetrical shape B) No dipole moment C) Unequal sharing of electrons D) Equal sharing of electrons
A) H₂O B) CO₂ C) NH₃ D) HCl
A) Nonpolar B) Ionic C) Polar D) Metallic
A) Evolution Theory B) Creation Theory C) Big Bang Theory D) Star Formation Theory/Stellar nucleosynthesis
A) BF3 B) CCl4 C) XeF4 D) HCl
A) Generally low boiling point B) Generally high boiling point C) Boiling point cannot be determined D) Similar non-polar molecules
A) Polar molecules B) Ionic compounds C) Metals D) Nonpolar molecules
A) Benzene B) Water C) Carbon tetrachloride D) Methane
A) Dipole-dipole forces B) Ionic bonding C) London dispersion forces D) Metallic bonding
A) Galaxy B) Main sequence C) Supernova D) Nebula
A) London dispersion forces B) Hydrogen bonding C) Dipole-dipole D) Ionic forces
A) London forces B) Van der Waals C) Hydrogen bonding D) Dipole-dipole
A) Dipole-dipole B) Hydrogen bonding C) Ionic attraction D) London forces
A) London dispersion forces B) Hydrogen bonding C) Metallic bonding D) Dipole-dipole
A) Intermolecular Forces of Attraction B) Intermetallic Forces of Attraction C) Internal Mass Force of Atoms D) Inter-Molecular Fusion Attraction
A) CO₂ B) CH₄ C) H₂O D) Cl₂
A) Highly electronegative atoms like N, O, F B) Carbon atoms C) Any atom D) Metals only
A) Cl, Br, I B) C, H, P C) Na, K, Li D) N, O, F
A) London dispersion forces, dipole-dipole, hydrogen bond B) London dispersion forces, hydrogen bond, dipole-dipole C) dipole-dipole, hydrogen bond, London dispersion forces D) dipole-dipole, London dispersion forces, hydrogen bond
A) HF B) NH₃ C) CH₄ D) H₂O
A) Liquids B) Solids C) Plasma D) Gases
A) Nonpolar B) Polar C) Ionic D) Amphipathic
A) Achieving extremely high temperature and pressure B) Finding helium atoms C) Stopping gravity D) Obtaining hydrogen gas
A) Iron is unstable B) Iron has no isotopes C) It requires too much energy input D) Iron fusion releases energy
A) Accept, because it explains heavy elements. B) Reject, because no stars explode. C) Reject, because only massive stars undergo supernova explosions. D) Accept, because white dwarfs always explode.
A) Elements cycle through star birth, death, and interstellar recycling. B) Elements stay locked in the first stars. C) Only stars produce elements. D) Heavy elements exist only in gas clouds.
A) Correct, because nonpolar molecules lack attractions. B) Incorrect, because London dispersion exists in all molecules. C) Correct, because polar molecules always have dipoles. D) Incorrect, because London forces form only in ions.
A) London dispersion B) Hydrogen bonding C) Dipole-dipole D) Ion-dipole
A) H₂ B) CO₂ C) NH₃ D) CH₄
A) Ion-dipole B) Hydrogen bonding only C) Dipole-dipole D) London dispersion
A) Molecules with weak London dispersion B) Strong hydrogen bonds C) Dipole-dipole only D) Ionic bonds |