Each turtle is assigned its new velocity, energy, and heading.This calculation is done in the center of mass system. They exchange momentum and energy along that axis, according to the conservation of momentum and energy.A random axis is chosen, as if they are two balls that hit each other and this axis is the line connecting their centers.Two turtles "collide" when they find themselves on the same patch.The exact way two particles collide is as follows: For example, selecting red-green-blue makes colors slow particles in blue, medium-speed particles in green, and fast particles in red. Particles can be color-coded by speed with the SHOW-SPEED-AS-COLOR? chooser. Collisions between particles are elastic. Particles are modeled as perfectly elastic with no energy except their kinetic energy, due to their motion. These models have been adapted from the model GasLab Pressure Box. Alternatively, they can change both the number of particles and the volume of the gas container, and see how these combined changes affect pressure. In this model, students can also look at the relationship between the number of particles and pressure, as well as the volume of the gas container and pressure. Temperature is held constant throughout the model. The number of particles can also be changed. In this model, the gas container has an adjustable volume. In all of the models, gas particles are assumed to move and to collide, both with each other and with objects such as walls. Each model highlights different features of how gas behavior is related to gas particle behavior. Most of the models in the Connected Chemistry curriculum use the same basic rules for simulating the behavior of gases. This model is part of the "Connected Chemistry" curriculum which explore the behavior of gases. This model explores the relationship between the volume of a gas container and the pressure of a gas in that container. Do you have questions or comments about this model?
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