Nanoscopic view of a solid - Our tiny spheres are in constant motion. Particles of a solid are alway moving; however, they do not move around each other maintaining a fixed structure called lattice.



Unit 2 - Simple Particle Energy and States - part 1

Gas inside a piston - The particles of the gas inside this container are in constant motion and collide against the walls of the container and each other. As they collide, they apply enough pressure to lift the weight on top of the piston.



Our spheres are in constant motion and interact with one another by collision

Matter can exist in three phases, which are characterized by the arrangement of particles. This arrangement affects the density and compressibility of each phase.
Particles of matter are in constant motion.
Kinetic energy (Ek) is related to the motion of the particles and is measured by temperature.
Energy is transferred from particle to particle via collisions.
Pressure of gases is explained in terms of the collisions of the particles with the sides of the container.
There are functional relationships between the pressure of a gas and the volume, temperature and the number of gas particles in a container


Dr. Michael M. Krop High School





The top picture shows a balloon filled with a gas at room temperature. The collisions of the gas against the rubber give the balloon its characteristic shape.

The picture below shows the same balloon as liquid nitrogen, with a frigid temperature of -196ºC, is poured on top. The drop in temperature translates into a slowing down of the gas particles inside the balloon. The slower moving particles occupy less volume. This is an example of Charle's Law.

Click on the picture for a video



Unit 2 Materials


m r . m o n t e r o . c o m