This interactive Web site shows that the molecules in a gas are moving constantly and colliding with the walls of its container. One wall of the container is a movable piston which is free to move up and down. Helps students understand that gas pressure is simply the result of collisions of gas molecules with the walls of the container. Chem Lab 2.0 allows students to perform simulated chemistry experiments using a large set of realistically-simulated grassware, chemicals, and laboratory equipment. A functional demo version of the software can be used to perform basic chemistry laboratory procedures such as titration, calorimetry, kinetics, and crystallization.
Students can change gravity, spring stiffness, and friction.
Lots of fun. Useful for reinforcing concepts of structure, stability, friction, gravity, force, frequency and phase. Allows students not only to read about genetics, but actually observe and manipulate processes at one biological level that affect life at another. Extensive curriculum activities have been developed and tested for this program. Gravitation is a shareware program for Macintosh that allows students to design, build, and operate their own solar systems under the laws of gravitation and planetary motion.