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IKATAN KIMIA Aturan OktetAtom-atom berikatan supaya kulit terluarnya terisi 8 elektron (oktet) Ikatan Ion, contoh NaCl Clˉ Na ● Cl → Na+ Clˉ Na+ Ikatan Kovalen, contoh HCl H ● + ● Cl → H● ●Cl biasa ditulis H─Cl Cl H
Macam-macam ikatan kovalenKovalen tunggal, contoh: Cl―Cl Kovalen rangkap dua, contoh: O═O Kovalen rangkap tiga, contoh: N≡N Kovalen koordinat, contoh: O═N→O
Kepolaran Ikatan & KeelektronegatifanSelisih keelektro-negatifan Sifat ikatan Contoh > 2,0 Ionik KCl, NaCl 0,5 – 2,0 Kovalen polar HCl, H2O, NH3 < 0,5 Kovalen nonpolar CH4, H2, O2 Diketahui keelektronegatifan: H = 2,1 Na = 0,9 K = 0,9 C = 2,5 N = 3,0 O = 3,5 Cl = 3,0
Penyimpangan aturan oktetOktet tak lengkap (kurang dari 8) NO2 Pada N elektron terluarnya menjadi 7 BF3 Pada B elektron terluarnya menjadi 6
Penyimpangan aturan oktetOktet berkembang (lebih dari 8) PCl5 Cl Cl P Cl Cl Cl Pada P elektron terluarnya menjadi 10 SF6 F F F S F Pada S elektron terluarnya menjadi 12
A c i d s & B a s e s. A c i d - B a s e T h e o r i e s A r r h e n i u s B r o n s t e d - L o w r y L e w i s A r r h e n i u s B r o n s t e d - L.
Balancing Equations Here are the problems and answers for the Card Game we played in class.
Synthesis Reactions Reaction in which two or more substance combine to form one new compound.
Balancing Equations 1.N 2 + H 2 → NH 3 2.KClO 3 → KCl + O 2 3.NaCl + F 2 → NaF + Cl 2 4.H 2 + O 2 → H 2 O 5.AgNO 3 + MgCl 2 → AgCl + Mg(NO 3 )
8th Grade Science T. Trimpe
NOTES Ionic vs. Molecular Compounds. AKA Salts Formula units Molecular compounds Molecules IONIC / IONIC COVALENT / MOLECULAR.
IIIIII II. Molecular Geometry Ch. 9 – Molecular Structure.
8 th Grade Science T. Trimpe
Starter Complete the full electronic configuration of: 1)Ti 2)Br 3)Cl - 4)Ca 2+ 5)Fe 3+ 6)Co 3+
Lewis structures & molecule shapes. AB or AB 2 – linear If there are only two atoms the shape will be linear – there are no If there are only two atoms.
8-2: Polarity. Remember electronegativity… An atom’s ability to attract electrons in a chemical bond. Polar bond: electrons are shared unequally between.
1 Chapter 7 Solutions 7.1 Solutions Copyright © 2009 by Pearson Education, Inc.
Jeopardy! AP Chemistry: Molecular Geometries, Ch 8 – 9.
Polarity of Molecules Objectives: 1. State the two factors that determine polarity of a molecule. 2. Explain how the structure of a molecule helps determine.
Physical Science (8A) Coach Dave Edinger J. C. Booth Middle School.
Go over Ch Test Summary of this week Questions over the reading Discussion / explanation Homework.
General, Organic, and Biological Chemistry Copyright © 2010 Pearson Education, Inc. 1 Chapter 8 Solutions 8.1 Solutions.
C. Johannesson III. Molecular Polarity (p. 183) Ch. 6 – Molecular Structure.
1 Chapter 7 Solutions and Colloids 7.1 Physical States of Solutions Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings.
Chemical Bonding Review Are you ready to play?. Chemical Bonding Review Question 1: Why do elements form chemical bonds.
R EVIEW Electronegativity is the ability to attract electrons.
Chemical Reactions Name: ___________________ Date: ____________ Period: _______ Name: ___________________ Date: ____________ Period: _______.
II. Kinds of Chemical Bonds (p )
Polarity – It exists in two forms Bond Polarity We looking at the difference in electronegativies between atoms to determine how they share their electrons.
Chemistry Unit 4 Bonding Why do atoms bond? -to become more stable -a full valence shell of electrons -valence shell = outside shell How do atoms bond?
I Chemical Bonding. Chemical Bond attractive force between atoms or ions that binds them together as a unit bonds form in order to… decrease potential.
Solutions Properties of Water Preparing Solutions.
Chemical Bonding What holds things together? PGCC CHM 101 Sinex.
Basic Chemistry Copyright © 2011 Pearson Education, Inc. 1 Chapter 12 Solutions 12.1 Solutions The water lost from the body is replaced by the intake of.
LecturePLUS Timberlake1 Chapter 8 Solutions Solutions Solutes Solvents.
A chemical formula is a representation of how many atoms are in a substance. E.g. HCl Hydrogen Chloride 1 Hydrogen atom; 1 Chlorine atom 0 overall charge.
Properties of Bonds Polarity Bond Order Bond Length Bond Energy.
Chapter 11 SYNTHESIS Definition: Two or more elements or compounds combine to make a more complex substance A + B → AB.
Warm-up: Concept: Ionic Bonding. Determine the product of each reaction. 1.Na + Cl ? 2.K + O ?
Chapter 6 Chapter 6 Representing Molecules 1.
Chemical Bonding Chapter 7. Chemical bonding ionic bond: an electrostatic attraction between ions of opposite charge covalent bond: “sharing” electrons.
Unit 11: Redox Oxidation numbers. What is an Oxidation number? Oxidation numbers are assigned to an atom in a molecule based on the distribution of electrons.
Stoichiometry Balancing Equations Molecular and Empirical Formulas Percent Composition Mole Conversions
Ch 8 Review.
IIIIII Molecular Geometry Molecular Structure. A. VSEPR Theory Valence Shell Electron Pair Repulsion Theory Electron pairs orient themselves so that.
Chapter 8: Periodic Properties of the Elements Chemical Bonds ionic bond covalent bond metallic bond.
COVALENT BONDING Hold on to your electrons!. What is a covalent bond? Atoms ___________ one or more electrons with each other to form the bond. Each atom.
Topic: Polarity in Covalent Bonds Do Now: What is the difference between a polar molecule and nonpolar molecule?
MOLECULAR GEOMETRY VSEPR ACTIVITY. CARBON DIOXIDE Chemical formula: CO 2 # of atoms bonded to central atom: 2 # of lone pairs on central atom: 0 What.
Solubility Do Now: p.4. Remember…likes dissolve like Things that dissolve in water – Soluble ionic – Acids (ex HCl) – Bases (ex. NaOH) – Polar covalent.
Post-Mission Challenge. __AgNO 3 +__NaCl __AgCl+__NaNO 3 Balanced? What type of reaction?
Polarity How does electronegativity affect the polarity of a covalent bond? How does the shape of a molecule affect the polarity of a molecule?
shared bonding electrons pairs are pulled (as in a “tug-of-war”) between atoms results in an equal or unequal sharing.
Acids Lesson 6 Classifying Everything. Neutral Acidic.
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