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