Descoperirea elementelor din sistemul periodic ...tartat6tlevelspace0tlevelindent0Itleveltextt01-SIt levelnumbersStfbias0 tfi-360tli360tjclisttabttx360tlin360 SItlistname Stlistid784154229SItlisttlisttemplateid-1949285628 tlistsimpleItlistleveltlevelnfc23tlevelnfcn23tlevel jc0tleveljcn0tlevelfollo0tlevelstartat6tlevelspace0 tlevelindent0Itleveltextt01-SItlevelnumbersStfbias0 tfi-360tli360tjclisttabttx360tlin360 SItlistname Stlistid1699236903SSIttlistoverridetableItlistover ridetlistid1699236903tlistoverridecount0tls1SItlist overridetlistid784154229tlistoverridecount0tls2SItl istoverridetlistid295768073tlistoverridecount0tls3S SIttrsidtbl trsid1145541SIttgenerator Microsoft ord 10.0.2627SItinfoIttitle ISTORIA DESCOPERIRII ELEMENTELOR CHIMICE SI A SUBSTANTELOR COMPUSESItauthor EagleSItdoccomm t0dt0a-------------------------------------------- ---------t0dt0aCopied from .referatul.go.rot0dt0a---------------------------- -------------------------SItoperator DanielSItcreatimtyr2002tmo5tdy15thr1tmin3SItrevtim tyr2002tmo5tdy15thr1tmin3SItversion2SItedmins0SItno fpages8SItnofords3641SItnofchars20760SIttcompany Eagle ComputersSItnofcharss24353SItvern16437SStltrsect tidoctrltftnbjtaenddoctnoxlattoyentexpshrtntnoultr lspctdntblnsbdbtnospaceforultformshadethorzdoctdghs pace180tdgvspace180tdghorigin1701tdgvorigin1984tdgh sho0tdgvsho0tjexpandtviekind1tviescale100tpgbrdrhea dtpgbrdrfootthtmautsptnolnhtadjtbltrsidroot1145541 tfet0tltrpar tsectd tltrsecttlinex0tendnheretsectdefaultcltsftnbj Ittpnseclvl1tpnucrmtpnqctpnstart1tpnindent720tpnha ng Itpntxta .SSIttpnseclvl2tpnucltrtpnqctpnstart1tpnindent720t pnhang Itpntxta .SSIttpnseclvl3tpndectpnqctpnstart1tpnindent720tpn hang Itpntxta .SSIttpnseclvl4tpnlcltrtpnqctpnstart1tpnindent720t pnhang Itpntxta SSIttpnseclvl5tpndectpnqctpnstart1tpnindent720tpnh ang Itpntxtb SItpntxta SSIttpnseclvl6tpnlcltrtpnqctpnstart1tpnindent720tp nhang Itpntxtb SItpntxta SSIttpnseclvl7tpnlcrmtpnqctpnstart1tpnindent720tpn hang Itpntxtb SItpntxta SSIttpnseclvl8tpnlcltrtpnqctpnstart1tpnindent720tp nhang Itpntxtb SItpntxta SSIttpnseclvl9tpnlcrmtpnqctpnstart1tpnindent720tpn hang Itpntxtb SItpntxta SStpardtplain tltrparts15tqc tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs28talang1025 tltrchtfcs0 tbtfs28tuldbtcf2tlang1033tlangfe2052tcgridtlangnp1 033tlangfenp2052 Itrtlchtfcs1 taf0tafs24 tltrchtfcs0 tfs24tinsrsid1145541tcharrsid1145541 ISTORIA DESCOPERIRII ELEMENTELOR CHIMICE SI A SUBSTANTELOR COMPUSEtpar Stpardtplain tltrpartqj tli0tri0tidctlpartaspalphataspnumtfaautotadjustrig httrin0tlin0titap0 trtlchtfcs1 taf0tafs20talang1025 tltrchtfcs0 tfs20tlang1048tlangfe2052tcgridtlangnp1048tlangfen p2052 Itrtlchtfcs1 taf0tafs24 tltrchtfcs0 tbtfs24tuldbtcf1tlang1033tlangfe2052tlangnp1033tin srsid1145541tcharrsid1145541 tpar SItrtlchtfcs1 taf0tafs24 tltrchtfcs0 tbtfs24tuldbtcf2tlang1033tlangfe2052tlangnp1033tin srsid1145541tcharrsid1145541 tpar tpar SItrtlchtfcs1 taf0tafs24 tltrchtfcs0 tbtfs24tcf2tlang1033tlangfe2052tlangnp1033tinsrsid 1145541tcharrsid1145541 SItrtlchtfcs1 taf0tafs24 tltrchtfcs0 tbtfs24tcf1tlang1033tlangfe2052tlangnp1033tinsrsid 1145541tcharrsid1145541 Multe capitole din istoria chimiei s-au dovedit foarte pasionante, dar nici unul nu are amploarea si stralucirea descoperirii elementelor chimice si a substantelor compuse.tpar SItrtlchtfcs1 taf0tafs24 tltrchtfcs0 tbtfs24tcf2tlang1033tlangfe2052tlangnp1033tinsrsid 1145541tcharrsid1145541 SItrtlchtfcs1 taf0tafs24 tltrchtfcs0 tbtfs24tcf1tlang1036tlangfe2052tlangnp1036tinsrsid 1145541tcharrsid1145541 In evolutia chimiei fiecare element nou descoperit a marcat o etapa care a deschs un nou camp de cercetari, atat prin studierea proprietatilor noului element in comparatie cu cele cunoscute cat si din punctul de vedere al aplicatiilor practice ale elementului ca atare si ale compusilor sai.tpar Antichitatea a cunoscut noua elemente chimice dintre care sapte metale Au, Ag, Cu, Sn, Pb, Hg, Fe si doua nemetale S si C.tpar Stpardtplain tltrparts16tqj tfi1276tli0tri0tidctlpartaspalphataspnumtfaautotad justrighttrin0tlin0titap0 trtlchtfcs1 tabtaf0tafs28talang1025 tltrchtfcs0 tbtfs28tcf1tlang1033tlangfe2052tcgridtlangnp1033tl angfenp2052 Itrtlchtfcs1 taf0tafs24 tltrchtfcs0 tfs24tlang1036tlangfe2052tlangnp1036tinsrsid114554 1tcharrsid1145541 Unele dintre metalele cunoscute in lumea antica erau de puritate foarte mare, aproape de cele de astazi. Nemetalele antice, S si C nu erau considerate corpuri simple ci compuse tendash ca si metalele acestei perioade tendash din patru t93elementet94 - aer, apa, pamant si foc tendash t93elemente din care se considera ca ar proveni toate celelalte corpuri. tpar Stpardtplain tltrpartqj tfi1276tli0tri0tidctlpartaspalphataspnumtfaautotad justrighttrin0tlin0titap0 trtlchtfcs1 taf0tafs20talang1025 tltrchtfcs0 tfs20tlang1048tlangfe2052tcgridtlangnp1048tlangfen p2052 Itrtlchtfcs1 taf0tafs24 tltrchtfcs0 tbtfs24tcf1tlang1024tlangfe1024tnoprooftinsrsid114 5541tcharrsid1145541 ItshpIttshpinsttshpleft3384tshptop1769tshpright561 6tshpbottom3497tshpfhdr0tshpbxcolumntshpbxignoretsh pbyparatshpbyignoretshpr1tshprk0tshpfbltxt0tshpz0ts hplid1027ItspItsn shapeTypeSItsv 75SSItspItsn fFlipHSItsv 0SSItspItsn fFlipVSItsv 0SSItspItsn pibSItsv Itpicttpicscalex100tpicscaley100tpiccropl0tpiccrop r0tpiccropt0tpiccropb0tpic3937tpich3048tpicgoal2232 tpichgoal1728tpngbliptbliptag694033132Ittblipuid 295e1aec34df7f30ee7c6b810d3075f2S89504e470d0a1a0a0 000000d49484452000000cf0000009c080200000057f9685100 00000467414d410000b1889598f4a6000000097048597300001 48a000013fe01528048dd0000200049444154789c94bd6b8f2c 497225768e994764bdeea3dfd33324678643811296bb02f4450 208fd0201faef12204080c4a5c89ded61f774dfeebeb71e9911 ee76f4c1dc23a3ea563567a31b81bc59999111eee6f63876cc9 c5f5c41020112004230c10ceb0a00140048e7d713212004a9bf 1f04d0af600566e74b8168ebf90a00c8febf199e3db48c17020 9102248449cbf28408202025001202f2fc20cee20715cc66d13 e6fd82124ae92fa4ddafbc7cd8eee6b7fb7ff1200e87f3fd3ff acb0bdfe2f8988408b486d6fa7d02a0f547dec6edfeee7cc1fd 835c5c3c7f7d09b5220266982698a135d4faf4f6cecf1bcf5d0 498a6f33dec0781717ed8d85d73a930831bcc202202d150fef7 ffed1f015032339a4819459224009391241c80c10150aba42e6 174922049d61a0044dbbeab3cb5daef082069d63f506b7deeb1 acad32f5792005cfcf0b3092c6429a608049929a310c6384dc8 cc5dd495e5e5f45842400014644adb5b57677f7a0716c3f9b37 f6ece8b7f5b4ffd8f67411cf4d0b243530f891707dfc4e3eafc 149dbff3122b61103222f3a6ed8dca6fda5b43b9ebd7f492dd6 8820394d9399b5d65a6b2f7d7eb29c6bc264f03c8b11b5c1682 00b4c2e0b0a60a36a8e7f83a0312fb47569a4b94d74332b0024 162e772469a038895e6804c9ba9e52ce481abc0b561f22f499a 1489a39497803200586a631908ae5744b451f6e3248331330e7 e27d7a98287451969999353393756923453840c00440edf470c b7e1b4698fb646166b6dcde4b8a064901d45ad775adb5ced3c5 36377926535d3f3bf8a0d6f36bd0faf030f8bcb435ada97537b 9cc736bedd9e73539705e84407ffcda96f380ab45444448b472 20cf0b6313b5e7a51992c468116166de64324630dab39f37202 7cb4045185c0aca6852ad30124408f0b11e62768215808b4013 4c124467139d08042907407ae1726b66a4a49093e1340383cbd ae71c265030928295f9a0fe8c449f23cb310d280292425d3b3a f4c9e544c4b692c6... Download |