Mudah dan Aktif Belajar Fisika untuk Kelas XII
198
A. Evolusi Model Atom
5:1; J1=1 4EE =1EC91 CE418 D5BD1B9; EDE; =575D18E9 2181 41C1B5IECEC5EBE8=1D5B9141J1DI171414911=99141C1
25B9;9BI1 C171D C545B811 =5B5;1 =571=29 11?79 C52E18 BE=18 I17 492E1D 41B9 21DE 41 ;1IE ;5=E491 21DE D5BC52ED 49CECE ?58
1BD9;51BD9;521DEI175298;53941C5D5BECI1;89BI1=5B5;1 C1=19 141 ;5C9=E1 218G1 2181 C5=E1 =1D5B91 41 J1D I17 141
49 11= 9DE 49CECE ?58 CE1DE 2181 41C1B
1. Model Atom Demokritus
45 D5D17 ;525B1411 2181 41C1B 99 ;19 5BD1=1 49;5=E;1;1 ?58,;077;9189BD18E
5=E491,46280:;9
M
=575=217;15411D,;077;94571=5=25B91=1,+ EDE;218141C1B991=199491=2941B92181C1E19I1725B1BD9
D941; 411D 492179 179 149 ,46280:;9 =5I1D1;1 218G1 C5=E1 =1D5B91 41 J1D I17 141 49 11= 99 49CECE ?58 21791 D5B;539 I17
D941; 411D 492179 179 I19DE 1D?=
141 =1C1 D5BC52ED 21I1; 1B1 69CE6 I17 =575=E;1;1 5411DI1 =57519 1D?= B7E=5D1C9 I17 =5B5;1 7E1;1 2E;1
4941C1B;1141815B3?211=519;125B41C1B;1?79;1-11EE 55=E1=5B5;199C521D1CD5?B9D5D198199D518=5:149D?771;
5D97 EDE; 5;5=2171 D5?B9 69C9;1 1D?= 41 69C9;1 9D9 59B97 4571 5B;5=2171 J1=1 21I1; 69C9;1G1 41 ;9=91G1 I17
D5BD1B9; EDE; =5=51:1B9 D5?B9 1D?= 99 D5BEC =5=2E1D 5F?EC9 =?45 1D?= C589771 49411D;1 =?45 1D?= C55BD9 C5;1B17 99
2. Model Atom Dalton
65 3:65 M 14118 C5?B17 9=EG1 77B9C I17 ;19 5BD1=1 =5I1D1;1 D5?B9 D5D17 1D?= 25B41C1B;1 81C9 5;C5B9=5
I17 491;E;1 69,7 86;9: C5?B17 ;9=91G1 41B9 B139C I17 =5I1D1;1 218G1 C5I1G1 49CECE ?58 ECEBECEB 4571
5B214971 D5D1 1C9 5;C5B9=5 86;9: 99 49C52ED E;E= 5B214971 5D1 141 86;9: =51;E;1 5;C5B9=5 4571
=5B51;C9;1 ECEB 894B?75 41 ECEB ?;C975 1 =55=E;1 C5I1G1 19B 4571 5B214971 D5D1 I19DE 71B 41 5298 :51C
5B81D9;1 D125 25B9;ED
,,3;44,47,31802659,70902:642,81253963963,802;:+34;2;3:05
Tes Kompetensi Awal
52ED;141:51C;1=?45=?451D?=I175B18 141=E1941B91G1C1=19=?45I17D5B21BE
52ED;11=11=1;E9DD5=1D55;DB?=57?B29D 411=1D?=4125B11:E=18=1;C9=E=55;DB?
I17411D25B141141D91;E9DD5BC52ED ?21415B81D9;1D1255B9?49;ECEBECEB
5EBED4121719=11;18E;EB1:1B9:1B91D?= 411=1C1DE5B9?45412C1DE7??71
Tokoh
John Dalton
1766–1844
John Dalton adalah seorang ilmuwan Inggris. Dia orang pertama
yang mengemukakan tentang teori atom berdasarkan hasil eksperimen
yang dilakukan Joseph Proust. Dalton menyatakan bahwa atom adalah
bagian terkecil dari benda yang tidak dapat dibagi-bagi lagi.
Sumber: www.allbiographies.com
52ED;1 ;?=?5 5IECE C52E18 1D?= 41 :51C;1;54E4E;1D91;?=?5D5BC52ED411=
1D?=
DIUNDUH DARI: WWW.BUKUPAKET.COM Sumber buku bse.kemdikbud.go.id
Fisika Atom
199
51981C95;C5B9=5B?ECD5;C5B9=519I1749:149;113E1 ?58 1D? 411= =5=2E1D D5?B9 1D?=I1 14118 5;C5B9=5 I17
491;E;1 ?58 5:605, 6090,8 41 8,09:3,? 141 4E1 ?B17 ;9=91G19DE=51;E;15;C5B9=54571=5=11C;1=5B;EB9?;C941
I17 498E2E7;1 4571 E41B1 49 G1418 D5BDEDE 1C9 5;C5B9=5 =5E:E;;1 =1CC1 C525E= B51;C9 41 C5CE418 B51;C9 14118 C1=1
5BI1D11 99 49;51 C521719 E;E= 1F?9C95B
E1 81C9 5;C5B9=5 99 =5=2E1D 3:65 =5=5B31I19 D5D17 ;525B1411 1D?= 9;1 CE1DE ECEB D5B49B9 41B9 2181 41C1B I17 D941;
;?D9E D941; =E7;9 141 5B214971 D5D1 ECEBECEB 5=25DE; C5I1G1 41 ;5;5;11 =1CC1 58 ;1B51 9DE 141
1D?
=57ECE;1 D5?B9 1D?= C521719 25B9;ED 1 D?= =5BE1;1 21791 D5B;539 CE1DE J1D I17 D941; 411D 492179
2179 179 2 5D91 ECEB =5=99;9 C961D E9; I17 C5CE19 4571 C961D 1D?=
5IECEI1 3 E1 1D?= 1D1E 5298 I17 25B1C1 41B9 ECEBECEB 25B191 411D
25B712E7 =5=25DE; =?5;E 4 141 CE1DE 5BC5I1G11 EDE; =5=25DE; =?5;E :E=18 =1CC1
C525E= 41 C5CE418 5BC5I1G11 14118 C1=1 5 141 CE1DE 5BC5I1G11 ECEBECEB 5=25DE;I1 C51E 25B141
411= 5B214971 D5D1 41 C545B811
3. Model Atom Thomson
Kategori