Particle Model And States Of Matter Flashcards
What are the three states of matter?
Solid, liquid, gas
Describe the arrangement and movement of particles in a solid.
Particles are closely packed together, in regular arrangement, and vibrate in place.
Describe the arrangement and movement of particles in a liquid.
Particles are in contact, in irregular arrangement, but move randomly.
Describe the arrangement and movement of particles in a gas.
Particles are widely spaced, in random arrangement, and move randomly.
What happens to particles when a substance melts?
Particles gain energy and move apart, becoming a liquid.
What happens to particles when a substance boils?
Particles gain energy and move apart, becoming a gas.
What is diffusion?
The spreading out of particles from a region of high concentration to low concentration.
What causes gas pressure?
Collisions of gas particles with the walls of the container.
Name a process that changes a liquid into a gas at any temperature.
Evaporation
Name the process when a gas turns into a liquid.
Condensation
What is sublimation?
The change from solid directly to gas.
