cation anion revisi
TRANSCRIPT
Contents
8. Exercises
2. Competence Standard
3. Indicators
7. Important concept And WEBSITE
9. CONCLUSION
1. title
4. Review for aperceptions
6. Cation and anion
5. Special song for you
10. Topics for the next meeting
CONTENTS
Icebreaker 1, 2, 3Identity
The number of protons, electrons, and neutrons
of cation and anion
Chemistry for Senior High School Year X Semester 1
A. Competence Standard:1. To realize atomic structure, element periodic
characters, and chemical bonding.
B. Base Competence:1.1. To realize atomic structure based on atomic theory Bohr, element characters, relative atomic mass, and element periodic characters in periodic table with realize the orderliness, pass electron configuration comprehension.
C. Indicators:
1. Students will be able to determine the number of protons, electrons, and neutrons of a cation.
2. Students will be able to determine the number of protons, electrons, and neutrons of an anion.
Basic Particles of Atom
ATOM
ELECTRON
NEUTRON
NUCLEON
PROTON
Atomic Number and Mass Number
Explanation:X : Chemical symbol for elementA : Mass number, indicates the number of
protons and neutronsZ : Atomic number, indicates the number of
protons (or electrons for a neutral atom)
XAZ
REVIEW Complete the table below!
Atomic Number
Mass Number
Number of Protons
Number of Neutrons
Number of Electrons Symbol
P311515 15161531
36
31
84
70
36
31
48
39
36
31
Kr8436
Ga7031
PTE
Na2311 + e
e = 11
p = 11
n = 12
Na2311
F199
F199+ e
e = 9
p = 9
n = 10
e = 10
p = 11
n = 12
e = 10
p = 9
n = 10
POSITIVE ION (CATION)Mg24
12224
12 Mg + 2ee = 10
p = 12
n = 12
e = 12
p = 12
n = 12
P3115 + 3e 331
15 Pe = 15
p = 15
n = 16
e = 18
p = 15
n = 16
NEGATIVE ION (ANION)
CATION AND ANION
Try to get the important concept of this material, OK?!
Notice that in the neutral atom:the number of protons = the number of electrons = atomic number (Z)
Choose A or B as the best answer to get the important concept!
In the cation:The number of protons = A. atomic number (Z) B. mass number (A)
The number of electrons =(x = charge of cation)A. Z - x B. Z + x
The number of neutrons =A. Z - A B. A – Z
Z
Z - x
A – Z
Choose A or B as the best answer to get the important concept!
In the anion:The number of protons = A. atomic number (Z) B. mass number (A)
The number of electrons =(x = charge of anion)A. Z - x B. Z + x
The number of neutrons = A. Z – A B. A - Z
Z
Z + x
A – Z
To learn more cation and anion, so you can browse the following websites
http://www.scienceunleashed.ie/Games/Build%20an%20atom.swf
http://www.ekimya.com/Anime/swf/Atom.swf
http://www.learner.org/interactives/periodic/swfs/ch1_atom_identification.swf
EXERCISE Complete the table below!
Ion Atomic
Number, Z
Number of p of
the ion
Number of e of
the ion
Number of n of the ion
Massnumber,
A
Notationof element
N3- 7 147 10 7
Al3+
S2-
Ca2+
Br-
13 13 10 14 27 Al
S
Ca
Br
32
4080
16
2045
18
1836
16
2035
16
2035
N14
7
1327
3216
2040
3580
CONCLUSION
“The number of protons, electrons, and neutrons of cation and anion”
For Cation (x = charge of cation, Z = mass number, A = atomic number)
The number of electrons = The number of protons = The number of neutrons =
For Anion (x = charge of anion, Z = mass number, A = atomic number)
The number of electrons = The number of protons = The bumber of neutrons =
Z - xZA - Z
Z + xZ
A - Z
THAT’S ALL
Keep Smiling…
Periodic table of elements
Go to slide 8
ISOTOPE ISOBAR ISOTONE ISOELECTRON
ISOTOPE
Atoms with identical atomic Atoms with identical atomic numbers but different mass numbers but different mass number are called number are called isotopes.isotopes.
Examples
12 12 CC andand
66
13 13 C C
66
ISOBARS
• Atoms of different elements that have Atoms of different elements that have similar mass numbers are called similar mass numbers are called isobars.isobars.
• Example : 14Example : 14 14 14 C and NC and N 66 77
Dra. SATRI FATMAWATI SMA 1 KENDAL
isotones• Atoms of different elements that have
similar numbers of neutrons are called isotones.
• Example : 31 32
P and S 15 16