States of Matter

A solid has a definite shape and volume because its particles are tightly packed and fixed in place.

A liquid takes the shape of its container due to its fluidity but maintains a definite volume because its particles are closely packed.

A gas has neither a definite shape nor a definite volume because its particles move freely and spread out to fill any container.

Melting is the process where a solid changes to a liquid due to the application of heat, which increases the kinetic energy of the particles.

Evaporation is the process where a liquid changes to a gas due to an increase in temperature or pressure, causing particles to escape into the air.

Condensation is the process where a gas changes to a liquid as it cools down, causing its particles to slow down and come together.

Freezing is the process where a liquid changes to a solid due to cooling, which reduces the kinetic energy of the particles, causing them to form a fixed structure.

The boiling point is the temperature at which a liquid changes to a gas due to sufficient heat causing vapor pressure to equal atmospheric pressure.

A solid has the most tightly packed particles, arranged in a fixed, orderly structure, which gives it a definite shape and volume.

In a gas, particles move freely and quickly due to high kinetic energy, allowing them to spread out and fill any container.

A gas can be compressed easily because its particles are far apart, allowing them to be pushed closer together under pressure.

Ice is an example of a solid because it has a definite shape and volume with tightly packed particles in a fixed arrangement.

Sublimation is the process where a solid changes directly to a gas without passing through the liquid state, due to specific temperature and pressure conditions.