Particle Theory and States of Matter Review Notes

Particles remain in fixed position and vibrate. Particles have a little strong energy. Particles have a fixed shape and volume.

Gas particles move in straight lines randomly and as far as possible. Particles have lots of weak energy.

Liquid Gas = Evaporation

<p>When matter is heated, it expands; when cooled, it contracts.</p> Signup and view all the answers

<p>Particles are always moving, there are spaces between particles, particles of a pure substance are identical, and particles are attracted to one another.</p> Signup and view all the answers

<p>Liquid</p> Signup and view all the answers

<p>Gas</p> Signup and view all the answers

<p>In a gas, particles move independently and are far apart, while in a solid, particles are tightly packed and vibrate in place.</p> Signup and view all the answers

<p>Kinetic energy is the energy of motion. In a solid, particles have low kinetic energy and vibrate in place. In a liquid, particles have more kinetic energy and can move past each other. In a gas, particles have the highest kinetic energy and move independently at high speeds.</p> Signup and view all the answers

<p>The process is called condensation. When a gas turns into a liquid, the molecules slow down.</p> Signup and view all the answers

<p>Evaporation occurs at the surface of a liquid, is a slower process, and requires less energy. Boiling occurs throughout the liquid, is faster, and requires more energy.</p> Signup and view all the answers

<p>The process is called melting. Heat energy increases.</p> Signup and view all the answers

<p>Gas</p> Signup and view all the answers

<p>Kinetic energy is the energy of motion. In a solid, particles vibrate in place; in a liquid, particles move past each other; in a gas, particles move freely and rapidly.</p> Signup and view all the answers

<p>The process is called evaporation. Molecules move farther apart.</p> Signup and view all the answers

<p>Particles remain in fixed position and vibrate. Particles have little strong energy attraction.</p> Signup and view all the answers

<p>Deposition</p> Signup and view all the answers

<p>Particles of a pure substance are identical and are attracted to one another.</p> Signup and view all the answers

<p>Particles slide and glide, though they do not move far. Particles have a medium attraction.</p> Signup and view all the answers

<p>The particle theory of matter states that all matter is made up of tiny particles, which are always moving, have spaces between them, and are attracted to one another.</p> Signup and view all the answers