
NOTASI ATOM
Presentation
•
Chemistry
•
11th Grade
•
Practice Problem
•
Medium
SUSIYUNIARTI SUSIYUNIARTI
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13 Slides • 1 Question
1
Oleh : Susiyuniarti
2
Multiple Choice
Gambar di samping adalah model atom menurut ....
John Dalton
J.J. Thomson
Niels Bohr
Erwin Schrodinger
3
Model atom Rutherford adalah ....
Menemukan inti atom atau nukleus dari eksperimen
Menemukan atom merupakan inti (terdiri dari proton dan neutron) yang dikelilingi oleh elektron yang bermuatan negatif
4
Neutron bermuatan (-)
Proton bermuatan (+)
Elektron tak bermuatan (0)
5
6
dimana;
X = lambang atom
A = massa atom
Z = nomor atom atau proton
elektron = proton
neutron = massa atom - proton
Notasi atom netral :
7
dimana;
X = lambang atom
A = massa atom
Z = proton atau nomor atom
elektron = proton - muatan
neutron = massa atom - proton
Notasi ion positif :
8
dimana;
X = lambang ion
A = massa atom
Z = nomor atom atau proton
elektron = proton - muatan
neutron = massa atom - proton
Notasi ion negatif :
9
Dari notasi atom di samping, maka informasi yang diperoleh adalah :
a) nama atom = Magnesium
b) massa atom = 24
c) proton = 12
d) elektron = 12 -----> karena atom netral
e) neutron = massa atom - proton
= 24 - 12
= 12
Contoh :
10
Dari notasi atom di samping, maka informasi yang diperoleh adalah :
a) nama atom = Kalium
b) massa atom = 39
c) proton = 19
d) elektron = 19 -----> karena atom netral
e) neutron = massa atom - proton
= 39 - 19
= 20
Contoh :
11
Dari notasi atom di samping, maka informasi yang diperoleh adalah :
a) nama atom = natrium
b) massa atom = 23
c) proton = 11
d) elektron = 11 - (+1)
= 10 -----> karena ion positif
e) neutron = massa atom - proton
= 23 - 11
= 12
Contoh :
12
Dari notasi atom di samping, maka informasi yang diperoleh adalah :
a) nama atom = Oksigen
b) massa atom = 16
c) proton = 8
d) elektron = 8 - (-2)
= 10 -----> karena ion negatif
e) neutron = massa atom - proton
= 16 - 8
= 8
Contoh :
13
Rusa lari sambil berputar
Sekarang kita mulai belajar
Supaya jadi anak yang pintar.
https://www.detik.com/sulsel/berita/d-6863486/100-kata-kata-motivasi-belajar-singkat-untuk-anak-sekolah.
14
Oleh : Susiyuniarti
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