Page 107 - الكيمياء كتاب الطالب للصف 11 الفصل 1

z yfy^a G 1 a £ a a -%ra

W6 ; `= ¯ d b ± ¤C: `= ¯ d b ± ` ÐC b E:
Û
.(HDPE) E C 8 ± Z6 R `= ¯ d b ±Ò –(LDPE) E C 8 ±
pxڎd= ˆJnfY d E »b9 R= ÓR ­Ò E »b9 \ C; ÐC89 : C: Ò

˜“œŸ- ^8/ ±’ C:<=Ø =;

EQ ˆJnfY E »b9 \ C; (HDPE) E C 8 ± Z6 R `= ¯ d b ± ]9 :

pxڎd= ` W4 c ¯ C<14 ²R ­ ´C S ± Ðb8 G= –R ­
Ób Ðb8 –±Q ˜(LDPE) E C 8 ± W6 ; `= ¯ d b ±

Z6 R `= ¯ d b ± ]9 : d C C Ò –R ­ E=98 ± id-id
.(LDPE) ` R ­ »C<0 ± E »¹ (HDPE) E C 8 ±
‹gšwÎ T—TÐ Q owڍc< |gPí owڍc< ‡ImeX ½À ¾ ‰bYTÐ

α@

´C »¹Ò ´C C8 M± W4 [=j ÑC ¹­ ÎÒP ± ` Û :1 › ¤ Û& ´C;= b C< ± ÐC=9 ´C »¹ ÑC ¹­ E:gC7 ± Û_1 ›œ
D27 ± dgC; Ób G= ` ¶»P ± X: ·R ± ˜C< C=9
˜G : ± D27 ± dgC; —d3 9 ± Û& ÐC=95 ± E »¹ ´C;= b C< ±
–188 »b96 ±
Û& ÐC=95 ± E »¹ E= = R ± E5=0 ± ÐC8 M±
–35 »b98 ±
–164 CH ÐC =: ±
4 +59 ÏÒR ±
–88 CH CH ÐC ˆ±
3 3 +184 ¹b= ±
–42 CH CH CH ÐC ÒR ±
3 2 3 RjC; ÐC=9 ´C »¹ d ¶»P ± X: ûj .­
0 CH CH CH CH ÐC b= ±
3 2 2 3 ˜“^6 ­ c ¯ c9 ­ ` ’ (VII) E b: : ±
˜ÐC=95 ± ´C »¹ d ¶»P ± X: ·R ± ˜²

_g±P ± D27 ± dgC; —_g±P ± D27 ± dgC; Ób E=:9 ´C 920

dgC; Ób ¤_g±¹ D2 dgC; C:<; ^ ]9 : `=Ø S `= ³¹b b: ± Ób7 ± c: Ù D27 ± dgC; Ób
Û
Permanent dipole- permanent dipole forces _g±P ± D27 ± dgC; —_g±P ± D27 ± D27 ± dgC; —_g±P ±

´C S ± P ­ c9 ³¹b b: ± (δ+) E; / ± `= ²Q ± ³b Ô¹@ Ò ˜(pd–pd forces) Permanent _g±P ±
˜´C S ± `= E6=4h ²Q ³b «b/ c ¯ »ÒC «ÔS Ù c9 ³¹b b: ± (δ–) E; / ±Ò dipole-permanent

dipole forces
´C S ±Ò –´C S ± W4 d _g±¹ ^8 d ±Õ¹b b D27 ± dgC; Ðb8 ˜“œ -’ ^8/ ±
:(pd–pd forces)
˜E= 2 ´C S c: _g±¹ D2 dgC; ]9 : d ± `= ?/; ²Q Ób
Û
N= pah_” îŽS H ; E= 27 ± ´C S ±
NeýÐØ Ñn]SÌ hýnf? ²C2 ­ ´C=gC; `
˜´C S ± d E:g±¹
CH 3 CH 3
δ– δ– n\aTÐ ýme> îR ½Á ¾ ‰bYTÐ
δ+ C O δ+ C O Q ŠýÐzTÐ n\aTÐ ýme> ŠýÐzTÐ
덙gGúÐ ëhm<í|—TÐ
CH 3 CH 3

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