Atomic Theory Quiz

Example Questions From the Test

• 3Which observation did Bohr’s model explain more successfully than Rutherford’s nuclear model alone?
  • The existence of isotopes with different masses
  • The deflection of cathode rays by electric fields
  • The discrete lines in hydrogen’s emission spectrum
  • The spontaneous decay of unstable nuclei
• 8Which discovery resulted from J. J. Thomson’s experiments with cathode rays?
  • Atoms contain negatively charged particles called electrons.
  • The nucleus contains neutral particles called neutrons.
  • Electrons behave only as waves and never as particles.
  • Positive charge is concentrated in a tiny nucleus.
• 16A pure sample of water always contains hydrogen and oxygen in the same proportion by mass. Which law does this demonstrate?
  • The law of definite proportions
  • The law of multiple proportions
  • The law of conservation of energy
  • The periodic law