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