Chem120 quizzes

During the years past, students seem to concentrate on earning high marks for quizzes, rather than concentrate on learning. Thus, the Chem120 instructors have decided not to ask students to write quizzes. Thus, quiz marks will not be counted towards your final grade during the fall term, 2002.

However, quizzes are available for you to test your own ability to solve problems. If your student ID and name are not on the lest, please send them in a e-mail to cchieh@uwaterloo.ca.

When entering large and small values, please use a format computer handles data. For example use 1.23e-45 for 1.23x10-45. Since most of the questions require you to enter a value according to certain units, you need not enter the unit with the value.



  1. Measurements and Units 01/09/13 - 02/10/11
    • Express quantities using scientific notations
    • Give the seven basic SI units
    • Give derived SI units to commonly used units and vice versa
    • Use prefixes for large and small quantities
    • Do unit conversion
    • Measurements review

  2. Chemical stoichiometry 01/09/13 - 02/10/04
    • Express amounts of substances in various units including moles
    • Correlate chemical formulas with quantities
    • Predict quantitative relationship from reaction equations
    • Determine excess & limiting reagents in reactions
    • Calculate theoretical and practical yields
    • Stoichiometry review

  3. Solutions and Reactions 01/09/20 - 02/10/11
    • Define saturated, unsaturated and over saturated solutions
    • Convert units for concentration solutions
    • Calculate quantities related to chemical analyses
    • Determine quantities reacted or produced
    • Find percentage of a salt in a mixture of salts with common ions, for example, Extra Problems B1, B2, B3 and B4.
    • Solutions & Reactions review

  4. Properties of gases 01/09/27 - 02/10/25
    • Describe Avogadro's theory about gases
    • Describe Boyle's, Charles', and Daltons' law of gases
    • Apply gas laws and the ideal gas law to calculate quantities of gases
    • Apply gas laws for stoichiometry calculations involving gases
    • Describe the kinetics of gases and compare rates of diffusion of various gases
    • Gases review

  5. Thermochemistry - Energy in chemical reactions 01/09/27 - 02/11/01
    • Explain the Principle of Conservation of Energy
    • Define internal energy and enthalpies of reactions
    • Explain Hess's law and apply it to quantities in chemical reactions
    • Describe the principles for experiments using calorimeters
    • Calculate quantities, including energies, in chemical reaction for a given condition

  6. Quantum theory of the H atom 01/09/27 - 02/11/08
    • Describe the electromagnetic spectrum
    • Calculate energy, wavelength, frequency by applying Max Planck's equation
    • Describe the line spectrum of the hydrogen atom
    • Apply the Rydberg formula to calculate energy, wavelength, and frequency of light emitted by hydrogen
    • Give the names of quantum numbers describe their rules
    • Apply the Pauli exclusion principle and Hund's rule to assign electronic configurations of atoms
    • Quantum review

  7. Electronic configuration and the periodic table 01/09/27 - 02/11/15
    • Correlate electronic configurations of atoms and their location on and the periodic table
    • Describe atomic properties of elements in view of their electronic configurations
    • Apply common sense to explain the trends of atomic properties of elements
    • Periodic Table review

  8. Ionic solids 01/09/25 - 02/11/22
    Bring a Periodic Table to write this quiz
    • Give the features of ionic solids and bonding in them
    • Define electronegativity and describe trends of variation in the period table
    • Define valence electrons, and give the number of valence electrons in for main-group elements
    • Give electronic configurations for ions
    • Give electronic configurations for transition metal ions
    • Compare ionic radii
    • Write Lewis dot structures for molecules
    • Apply Born-Haber cycle to evaluate quantities in chemical reactions
    • Ionic bonding review

  9. Chemical bonding 01/09/25 - 02/11/29
    • Define bond order, bond length & bond (dissociation) energy
    • Describe sigma and pi bonds and multiple bonds in CH2=CH2 and C2H2 etc.
    • Draw Lewis dot structures and assign formal charges
    • Describe octet rule and give examples for exceptions of octet rule
    • Draw resonance structures for molecules and ions
    • Define electron affinity and electronegativity
    • Chemical bonding review

  10. VSEPR Theory - shapes of molecules 01/09/25 - 02/12/06
    • Describe VSEPR Theory
    • Identify central atom in a molecule or ion
    • Evaluate electron pairs (or VSEPR pairs or steric number) & molecular geometry
    • Describe the geometry of the molecule using linear, bent, trigonal planar, tetrahedral, trigonal pyramidal, trigonal bipyramidal, see saw (or butterfly), T-shape, octahedral etc.
    • Describe the shapes of hybrid orbitals and molecular shapes
    • Draw relative energy levels of molecular orbital
    • Figure out the electronic configuration of a molecule, and determine the bond order and predict other properties such as magnetic properties
    • VSEPR Theory summary

Click Quiz to begin.

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