Solids, Liquids & Gases Flashcards

All 7 cards in this deck

Using the kinetic theory model, describe the arrangement and movement of particles in a solid.

Particles are closely packed in a regular arrangement and vibrate about fixed positions.

Using the kinetic theory model, describe the arrangement and movement of particles in a liquid.

Particles are close together but randomly arranged, and can move past one another.

Using the kinetic theory model, describe the arrangement and movement of particles in a gas.

Particles are far apart and randomly arranged, moving quickly in all directions.

In terms of particle spacing, why is a substance much less dense as a gas than as a liquid?

Its particles are much further apart, so the same mass fills a far larger volume.

Which state of matter usually has the highest density, and why in terms of particles?

The solid state, because the particles are packed most closely together.

True or false? Water is unusual because it is less dense as a solid (ice) than as a liquid.

True. Ice floats on water, whereas most substances are denser as a solid.

True or false? When a solid is heated until it becomes a gas, its particles get bigger.

False. The particles stay the same size; they simply move faster and become much further apart.