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CHANGES OF STATE

CHANGES OF STATE. By: Edith Velasquez Chapter 3 Section 2 . CHART. SUBLIMATION SOLID LIQUID GAS Melting Point Boiling Point Freezing Vaporisation Condensation. SOLID TO LIQUID. SOLID TO LIQUID.

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CHANGES OF STATE

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  1. CHANGES OF STATE By: Edith Velasquez Chapter 3 Section 2

  2. CHART SUBLIMATION SOLID LIQUIDGAS MeltingPointBoilingPointFreezingVaporisation Condensation

  3. SOLID TO LIQUID

  4. SOLID TO LIQUID • MELTING: thechange in statefrom a solidto a liquid. • MELTING POINT: thetempeture at wich a substancechangesfrom a solidto a liquid. • At itsmeltingpoint, theparticlesof a solidsubstance are vibrating so fastthattheybreack free fromtheirfixedpositions.

  5. LIQUID TO SOLID

  6. LIQUID TO SOLID • FREEZING: thechange os statefromliquidtosolid. • At itsfreezingtempeture, theparticlesof a liquid are moving so slowlythattheybegintoform regular patterns. • Example: liquidwaterinto a freezer, thewaterloosesenergytothe cold air in thefreezer.Just a fewhours in freezer andtheliquidbecomessolid.

  7. LIQUID TO GAS

  8. LIQUID TO GAS • Liquids can vaporize in twoways. • VAPORIZATION: thechangefromliquidto gas. • Vaporizationtakes place whentheparticles in a liquidgainenoughenergytoform a gas. • Vaporizationthattakes place onlyonthesufaceof a liquidiscalled EVAPORIZATION. • BOILING: occurswhenliquidchangesto gas belowitssurface as well as at thesurface. • BOILING POINT: tempeure at whichliquidboils.

  9. SOLID TO GAS

  10. SOLID TO GAS • SUBLIMATION: occurswhenthesurfaceparticlesof a solidgainenoughenergythattheyform a gas. • Duringsublimationparticlesof a solid do not pass throughtheliquidstate as theyform a gas. • Example: Solidcarbon-dioxidecalled “dry-ice” sublimates,itchangesdirectlyinto a gas. • Insteadofmeltingthesolidcarbondioxideitbecomesdirectly gas.

  11. CONDENSATION

  12. CONDENSATION • CONDENSATION: itistheoppositeofvaporization. • Condensationoccurswhenparticles in a gas lose enoughthermalenergytoform a liquid. • You can notseewater vapor. Water vapor is a colorless gas thatisimpossibletosee. • Example: Cloudstypicalyformwhenwater vapor in theatmospherecondensessintoliquiddroplets. Whenthedopletsgetheavyenoughtheyfalltothegownandthatswhatweknwo as rain.

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