A) The three-dimensional arrangement of atoms in a molecule. B) The mass of an atom. C) The speed at which a molecule moves in a gas. D) The total number of protons in a nucleus.
A) Electron affinity B) Atomic weight C) Boiling point D) Bond angle
A) Low temperatures increase the reactivity of molecules. B) Chemical bonds break automatically at high temperatures. C) At high temperatures, the structure is averaged over more accessible geometries. D) Molecules become invisible at high temperatures.
A) Visible light spectroscopy B) Mass spectrometry C) Atomic absorption spectroscopy D) IR spectroscopy
A) The nature of the chemical bonds connecting it to neighboring atoms. B) The number of neutrons in the nucleus. C) The color of the substance. D) The atmospheric pressure.
A) The total length of the entire molecule. B) The size of the electron cloud around the nucleus. C) The distance between two electrons in a bond. D) The average distance between the nuclei of two bonded atoms.
A) Two atoms. B) Five atoms. C) Three atoms. D) Four atoms.
A) Translation B) Rotation C) Molecular vibration D) Magnetic oscillation
A) They show zero point quantum mechanical motion. B) The molecule disintegrates. C) All molecular motion stops completely. D) They move at their maximum velocity.
A) The Avogadro number B) The Pauli exclusion principle C) The Rydberg constant D) The Boltzmann factor
A) The bending of a single bond. B) The distance between the two terminal atoms. C) The angle between two planes formed by four consecutive atoms. D) The angle between two lone pairs.
A) Electron capture B) Orbital hybridisation C) Radioactive decay D) Nuclear fusion
A) Inner shell electrons B) Unhybridized p orbitals C) Sigma orbitals D) Ionic interactions
A) X-ray crystallography B) Liquid chromatography C) Gas electron diffraction D) Mass spectroscopy
A) Too many rotational states are thermally populated. B) Spectroscopy equipment fails at high heat. C) Molecules evaporate too quickly. D) The bond lengths change to infinity.
A) Enantiomers B) Constitutional isomers C) Stereoisomers D) Diastereomers
A) Different atom connection orders B) Identical chemical properties C) Same bond angles D) Same 3D orientation
A) Different connection order B) Same 3D orientation C) Same connection order but different 3D orientation D) Different chemical formula
A) Enantiomers and diastereomers B) Planar and octahedral C) Structural and constitutional D) Linear and tetrahedral
A) 120 degrees B) 180 degrees C) 105 degrees D) 90 degrees
A) Ammonia B) Water C) Methane D) Carbon dioxide
A) 109.5 degrees B) 90 degrees C) 120 degrees D) 180 degrees
A) Trigonal planar B) Bent or V-shaped C) Octahedral D) Tetrahedral
A) 105 degrees B) 120 degrees C) 109.5 degrees D) 180 degrees
A) 180 degrees B) 90 degrees C) 120 degrees D) 109.47 degrees
A) Trigonal planar B) Tetrahedral C) Octahedral D) Linear
A) Four B) Three C) Eight D) Six
A) 90 degrees B) 105 degrees C) 120 degrees D) 180 degrees
A) Ammonia B) Sulfur hexafluoride C) Boron trifluoride D) Methane
A) Trigonal pyramidal B) Tetrahedral C) Trigonal planar D) Linear
A) Zero B) One C) Three D) Two
A) Linear algebra B) VSEPR C) Structural isomerism D) Quantum mechanics
A) As lines B) As a smooth pipe C) They are not represented D) As spheres (balls)
A) Line or stick B) Spacefilling C) Electron density plot D) Cartoon
A) As a series of overlapping spheres B) As individual atoms and bonds C) As a smooth pipe D) As an electron density cloud |