NAME

Question types


Start with


Question limit

of 27 available terms

Advertisement
Print test

5 Written questions

5 Matching questions

  1. Scanning Tunneling Microscopes(STM)
  2. Avogadro's number
  3. Atomic Number
  4. Gold Foil experiment
  5. Electrons
  1. a Conducted by Ernest Rutherford in which alpha particles that were shot at gold foil were deflected when they hit the positive center of gold atoms. The nucleus was discovered as a result of this experiment.
  2. b number of representative particles in a mole, 6.02 X 10^23
  3. c negatively charged particles found outside the nucleus
  4. d Uses a needle-like probe to measure differences in voltage caused by electrons that leak, or tunnel, from the surface of the object being viewed
  5. e The number of protons in the nucleus of an atom.

5 Multiple choice questions

  1. a powerful force of attraction that binds protons and neutrons together in the nuleus
  2. the amount of a substance that contains as many particles as there are atoms in exactly 12 g of carbon-12
  3. evacuated glass tube in which a stream of electrons emitted by a cathode strikes a fluorescent material, causing it to glow(used to discover the electron)
  4. the weighted average of the atomic masses of the naturally occurring isotopes of an element
  5. if two or more different compounds are composed of the same two elements, then the ratio of the masses of the second element combined with a certain mass of the first element is always a ratio of small whole numbers

5 True/False questions

  1. Nucleusthe amount of a substance that contains as many particles as there are atoms in exactly 12 g of carbon-12

          

  2. J J Thompson1897- Idea of a subatomic negatively charged particle (electron). Made Plum Pudding model of the atom.

          

  3. Mass numberThe number of protons in the nucleus of an atom.

          

  4. Relative Atomic Massthe weighted average of the atomic masses of the naturally occurring isotopes of an element

          

  5. Protonatom of an element that has a number of neutrons different from that of other atoms of the same element