TO MOLECULAR MODELING-
introduction to molecular modeling using the Jmol applet also
provides a review of basic structures in organic chemistry studied
in middle school. This is an ideal starting point for a science
IT WITH MOLECULES
does ice float?-- How does soap work? -- Why is diamond so hard?--
Why do carcinogens like nicotine cause cancer? -- Why is a salt
crystal cubic in shape? -- This is an interactive activity using
the Jmol applet which allows students to interact with molecules.
are numerous periodic table applets available, but this one has
some special features ideal for high school chemistry. Simply
click on the desired element and data as well as a graphical plot
of electron configurations will be displayed. This particular
version shows the electronic configuration of the element in the
panel on the right. Future versions of this applet will show relative
atomic sizes, electronegativities and other periodic trends, as
well as extensive atomic data.
LAB -- WEB VERSION
Virtual Laboratory allows students to select from hundreds of
standard reagents and manipulate them in a manner that resembles
that of a real lab. It allows students to design and perform diverse
experiments in acid-base chemistry, thermochemistry, solubility,
and redox chemistry. This is the web version. See below for the
download version. Instructions and tutorials located here.
of the first numerical problems encountered in introductory chemistry
is that of "limiting reagents". The applet does not approach or
solve the problem as it would be done with paper and pencil, on
the blackboard, or in the textbook. Rather, it serves as a supplement
to such calculations, providing imagery that helps students see
beyond a rote mathematical procedure.
tutorial simulates diffraction of alpha particles (helium nuclei
containing two positive charges) by a thin foil made of gold metal.
site contains background material and instruction for use of the
Flash Applet. Two pages for analyzing data containing student
questions are also provided.
THEORY OF THE HYDROGEN ATOM
applet illustrates a hydrogen atom according to particle or wave
model. You can choose a principal quantum number n. The right
part of the graphics will show the energy levels of the atom.
At the bottom of the page you can read off the orbital radius
r and the total energy E.
tutorial examines the first four energy levels of an atom, s,
p, d, and f, chosen through the pull-down menu.
AND EMISSION SPECTRA FOR ELEMENTS
applet shows the absorption or emission spectra for the elements.
site contains seven experiments and questions related to thermodynamic
equilibrium. To view the applets read the instructions and then
proceed to the first experiment.
this series of experiments, you will control the action of a piston
in a pressure chamber which is filled with an ideal gas.
PROCESSES OF AN IDEAL GAS
can check the following laws with the simulation:
process: pressure constant V/T constant
Isochoric process: volume constant p/T constant
Isothermal process: temperature constant pV constant
applets e.g., Boyle's Law, Charles's Law, Avogadro's Law, Ideal
Gas Law and Dalton's Law. Each applet comes with background Concept
information and full experiment. Applets from University of Davidson
applet shows both the ideal gas law as well as the Maxwellian
Velocity Distribution by using particles inside a balloon whose
temperature can be adjusted. Digital readouts give the pressure
and mean particle speed and the velocity distribution for a given
temperature is graphically shown. A parameter tag also changes
the state of the balloon to that of a planetary atmosphere where
the concept of escape velocity and the tail of the velocity distribution
can be shown.
AND RADIOACTIVITY APPLET
applet allows you to choose from 16 different radioactive isotopes
of elements and watch a sample of atoms change color as they decay.
A graph will show the number of atoms of each type (initial element
and final element) as they decay in real time.
large-scale thermodynamic concepts through the study of microscopic
particle interactions. This is the Java applet prototype of Simple
Molecular Dynamics (SMD. Java application from education group
in Boston University’s Center
for Polymer Studies. For classroom applications contact the
Boston University Science and
Mathematics Education Center
following applets require downloading
CHEMISTRY LAB SIMULATION (Download
your chance to mix chemicals without wearing safety goggles. You
won't spill any acid on the spectrometer in this lab. Choose solutions
from the vast database and mix 'em together till the cloned cows
come home. Marvel as the chemical solutions react in real time.
LAB PROGRAM FROM NASA
is a series of computer animations which demonstrate all the possible
combinations of the ideal gas law or equation of state. This site
contains several other free applets from NASA. Complete student
activities are available for this applet.
goal of the Molecular Logic project is to improve the ability
of all students to understand fundamental biological phenomena
in terms of the interactions of atoms and molecules. The Molecular
Logic project aims to do this by enhancing biology courses with
guided explorations of powerful atomic and molecular computational
models. These models are embedded in an easily implemented database
linked to both typical textbooks and standards.
(Chemistry Visualization) is an interactive chemistry program
which incorporates computational chemistry simulations and visualizations
for use in the chemistry classroom. The chemistry simulations
support the chemistry principles teachers are trying to convey,
and the visualizations allow students to see how matter interacts
at an atomic level.
is an NSF-funded project to study students' understanding of chemistry
and develop software and curriculum to help students investigate
chemical systems and express their ideas in animated chemical