Phases of MatterPhases of Matter

Physical Science Physical Science Objective 5.03Objective 5.03

SolidSolid

A solid is a substance that holds its A solid is a substance that holds its shapeshape

The particles that make up a solid The particles that make up a solid substance have low kinetic energy substance have low kinetic energy and are packed tightly togetherand are packed tightly together

Solid ParticlesSolid Particles

LiquidLiquid

A liquid is a substance that holds its A liquid is a substance that holds its shape in a containershape in a container

The particles that make up a liquid The particles that make up a liquid substance have an increased kinetic substance have an increased kinetic energy and are able to spread energy and are able to spread further apartfurther apart

Liquid ParticlesLiquid Particles

GasGas

A gas is a substance that does not A gas is a substance that does not hold its shape hold its shape

The particles that make up a gas The particles that make up a gas substance have high kinetic energy substance have high kinetic energy and are able to move freely in the and are able to move freely in the space available to themspace available to them

Gas ParticlesGas Particles

Phase ChangesPhase Changes

Substances change from one state of Substances change from one state of matter to another as heat is added to the matter to another as heat is added to the substancesubstance

The absorption or release of heat leads to The absorption or release of heat leads to a change in kinetic energy of the a change in kinetic energy of the substances particlessubstances particles

As the kinetic energy of particles changes As the kinetic energy of particles changes the state of matter changesthe state of matter changes

Phase Change:Phase Change:Solid -> LiquidSolid -> Liquid

As heat is added to a solid, the solid As heat is added to a solid, the solid will begin to meltwill begin to melt

Every solid has a different Every solid has a different temperature at which it melts. This temperature at which it melts. This temperature is called the temperature is called the melting melting pointpoint

Phase Change:Phase Change:Liquid -> GasLiquid -> Gas

As heat is added to a liquid, the As heat is added to a liquid, the liquid will begin to vaporizeliquid will begin to vaporize

Every liquid has a different Every liquid has a different temperature at which it vaporizes. temperature at which it vaporizes. This temperature is called the This temperature is called the boiling boiling pointpoint

Phase Change DiagramPhase Change Diagram

Melting/Freezing Point

Boiling Point

States of Matter along a Phase States of Matter along a Phase Change DiagramChange Diagram

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