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5 Written questions

5 Matching questions

  1. Graham's law of effusion
  2. photon
  3. molar volume (of a gas)
  4. mass percent solution
  5. liquid
  1. a A tiny packet of energy that streams with others of its kind to produce a beam of light.
  2. b The rates of effusion of two gases at the same temperature and pressure are inversely proportional to the square roots of their densities or molar masses.
  3. c The grams of solute in 100 g of a solution.
  4. d A state of matter in which the particles move about freely while the substance retains a definite volume; thus, liquids flow and take the shape of their containers.
  5. e The volume of 1 mole of a gas at STP equals 22.4 L/mol.

5 Multiple choice questions

  1. Anything that has mass and occupies space.
  2. The characteristics of substances that give them unique identities.
  3. SI unit of volume.
  4. An arrangement of atoms in the VSEPR model where the three pairs of electrons are placed 120 degrees apart on a flat plane.
  5. Evaporation.

5 True/False questions

  1. ionization energyStored energy, or the energy of an object due to its relative position.


  2. law of multiple proportionsAtoms of two or more elements may combine in different ratios to produce more than one compound.


  3. heatA form of energy associated with the motion of small particles of matter.


  4. principal energy levels of electronsExisting within the atom, these energy levels contain orbitals within which electrons are found.


  5. Gay-Lussac's lawThe resistance in a liquid to increase its surface area.


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