Substances that are gases at room temperature display similar physical properties despite their composition. The Kinetic Molecular Theory is a model that explains the behavior of gases in terms of particles in motion. Several assumptions are made: 1. Gases consist of small particles; 2. Gas particles are in constant, random motion, and 3. Gases are measured in terms of kinetic energy, or temperature. Kinetic energy uses one-half of the mass of a particle times its velocity squared. Using this information as a reference, answer the following questions. Select the best answer from the choices.
Gases have a _______________ density than solids.
Gases can be ________________________, or squeezed to fit into a smaller container.
When the pressure of a gas increases, at a constant temperature, its volume ____________________.
Stays the same
Increases, then decreases
When the temperature of a gas decreases at constant volume, its ________________.
Particles move faster
Because there are no significant forces of attraction between gas particles, they can easily ___________ past one another.
What is the term that describes the movement of one material through another?
True or false? Lighter particles diffuse more rapidly than heavier particles.
The force of a gas's outward push on the walls of its container is the gas's __________.