States of States of MatterMatter

States of Matter Brain Pop Movie

SolidSolid Molecules Molecules in a solid in a solid are close are close together; together; they they vibrate, but vibrate, but do not do not change change position.position.

Have a definite shape and volume

LiquidLiquidMolecules Molecules in a liquid in a liquid slide past slide past one one another, another, but do not but do not spread spread apart.apart.

Have no definite shape but have a definite volume

GasGas Molecules Molecules in a gas in a gas move freely move freely and more and more quickly, quickly, separated separated from one from one another.another.

Have no definite shape nor volume

Plasmavery high KE - particles collide with enough energy to break into charged particles (+/-),gas-like, no definiteshape or volumeEx. stars, fluorescentlight bulbs, and CRTs

Matter Changing State Matter Changing State Brain Pop Movie

• Which has the MOST energy? Why?Which has the MOST energy? Why?

• Which has the LEAST energy? Why?Which has the LEAST energy? Why?

Because the Because the molecules molecules are moving are moving the the fastestfastest! ! Most kineticMost kinetic

energyenergy

Because the Because the molecules molecules are moving are moving the the slowestslowest! ! Least kineticLeast kinetic

energyenergy

Phase ChangesPhase ChangesIncreasing ENERGYIncreasing ENERGY

Phase Change GraphPhase Change Graph

Phase ChangePhase Change• During a phase change, During a phase change,

temperature does not increase. temperature does not increase. If energy continues to be put in If energy continues to be put in but the temperature doesn’t go but the temperature doesn’t go up, then what is the energy up, then what is the energy doing?doing?–The energy is being used to The energy is being used to

change the matter from one change the matter from one state to another.state to another.

Matter Song

Phase Dance• Get into a group with the Get into a group with the students in your row.students in your row.

• Pretend that Pretend that youyou are molecules— are molecules—come up with a way to come up with a way to demonstrate, using your bodies demonstrate, using your bodies as props, the three states of as props, the three states of matter.matter.