Question

Compare and contrast the three phases of matter and give an example of a substance in each phase. Based on kinetic molecular theory, what happens to the kinetic energy of the molecules of a substance as it goes from solid to liquid to gas?From a molecular point of view, explain why evaporation is a cooling process. What cools? Give an example.From a molecular point of view, explain why condensation is a warming process. What warms? Give an example.Why is a steam burn more damaging than a burn by boiling water of the same temperature?

Answer 1

Phates of matter are soltd, qutd anc gases, plasmas The prede 여 matter diperoa on tne Potentfal energ'Y tome. afomec forcas holding tre partfctes togetner and therma energy of the paricle motfont orystaline solids. range rder. Tbe atom are closely packed on laitia polts b by atomtc loond. held Ra place ex-semfconcluctoos, qucotz, calt etc.. Amosphous soitdls These are Cuoseiy packed toge ther but ta teanstatfoocal ymmettay o crysta line souds ex- glass Astre mateo Pa/ ft heated the foterrar energy fc toreased and the atom, are notong'er tted to their Laff彳α pos?t?eng at an move areeatve to eachother. ex- wates are ufctely Separated ,move a rooundl eely and move at negh speeds . ez ngen, netrogen etc

Pasmas E ventualiy ,given enough heat ,the eludrons and oucans be come separated and ioto poctfvely charged tons and negatively charged elsctoons. Thts group os ror electrons fs knoon as fonand plasma 2) mdaculs to the solt'd phase have the least am oupt og d molatalu energt trca toey are not movtag uwhite (eqcr hawe moderate amount. 역 energy and gas, parttu, have thegreautest anount o onergy Hencs tne kthette enesty tacreater as ft goer from colta to tne ithette enerey facreates as t goer from coluld to tequutcl to gos stace meres targe space betwea.n mota uules and tey are alisarys moving る) Gvaporodt n courwes coolthg" because the proces requufresbecdt erergy. The energy staken ausat by tne molocutlas when trey eonvert from tRqutd foto water to wsater vapour. 4) The扣γmadfo) of conderdaffon rca warmeg proces s becasuse rt re lease eergy thto the atmosphere that cause its tem perature to ocrease when Condensation rm fnto a uutd. The ruid stoute gequtres s, water va pour condenses rom a gas Leys enegy

traの初eaas State . Cordenary from gas to draaid. mpou γ Severe burn than uing' Steam Wr produce more cvater because steam has more hecut cwater due to Pts latent heact and bontng water can exist at voryfag temperatures but Pt s o Carect to assume here hat bothare at the same temperature of vaporfratfon. Steam

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