Chapter 2 The Material World

Slides:

Advertisements

Similar presentations

Topic: Oxidation States and Criss Cross Method Do Now: Ionic, Covalent or Metallic 1.Mg 2.MgO 3.NaCl 4.CO 2 5.H 2 O 1.Metallic 2.Ionic 3.Ionic 4.Covalent.

Advertisements

IONIC BONDING When an atom of a nonmetal takes one or more electrons from an atom of a metal so both atoms end up with eight valence electrons.

Writing Ionic Formulas Calcium Chloride Locate the metal on the periodic table and write the element symbol with its oxidation number. Ca +2.

IONIC COMPOUNDS Chapter 5.8. IONIC COMPOUNDS Recall: Metals form positive ions (+) and non-metals form negative ions (-). Na 1+ Cl 1-

Periodic Trends: Atomic Radius Ionization Energy Electronegativity Metallic properties.

Activity Directions: Use the worksheet to guide you as you create the formulas. You will be matching the blue and yellow elements according to their valance.

Ionic Bonding. CA Standards  Students know atoms combine to form molecules by sharing electrons to form covalent or metallic bonds or by exchanging electrons.

LecturePLUS Timberlake1 Chapter 4 Compounds and Their Bonds 4.1 Valence Electrons 4.2 Octet Rule and Ions.

1 Chapter 4 Compounds and Their Bonds 4.1 Octet Rule and Ions Copyright © 2009 by Pearson Education, Inc.

The CrissCross Method &Polyatomic ions

Objectives Know atoms combine to form molecules by sharing electrons to form covalent or metallic bonds or by exchanging electrons to form ionic bonds.

Compounds and their Bonds

Chemical Bond  The attraction between atoms that holds them together and makes them function as a unit.

Compounds & Molecules Counting atoms. Counting atoms in a chemical fomula Add up the subscripts. Ca 3 P 2 = 5 atoms Don’t forget the “invisible” 1’s CaCO.

OB: naming simple monoatomic ionic compounds You must have your own reference tables open to the periodic table now. No calculators needed. One big chunk.

 When non-metals gain electrons to become ions, the name of the ion changes its ending to “ide”.  Fluorine fluoride  Chlorine chloride  Oxygen oxide.

1 Chapter 4 Compounds and Their Bonds 4.1 Octet Rule and Ions Copyright © 2005 by Pearson Education, Inc. Publishing as Benjamin Cummings.

 atoms that are now stable because they have gained or lost valence electrons resulting a positively or negatively charged atom.

Atom – the smallest unit of matter “indivisible” Helium atom.

Metal atoms lose e- to form positive ions called cations: K + Ca 2+ NH 4 + Nonmetal atoms gain e- to form negative ions called anions: Cl - S 2- CO 3 2-

Warm Up What is the charge of a cation? negative or positive How are cations formed? What is the charge of an anion? negative or positive How are anions.

IONIC COMPOUNDS. REVIEW OF ATOMIC STRUCTURE The structure of the atom Neutrons + Protons are in the nucleus Electrons in orbits around the nucleus Neutrons.

Writing and Naming Ionic Formulas. Copyright © by Holt, Rinehart and Winston. All rights reserved. Objectives Name simple ionic compounds. Predict the.

Ionic Bonding. CA Standards  Students know atoms combine to form molecules by sharing electrons to form covalent or metallic bonds or by exchanging electrons.

Combining Elements How Chemical Compounds Are Made.

Ionic Bonding. What makes an atom most stable? Electron configuration – Electron configuration – When the highest occupied energy level is filled with.

Ionic Bond Formation. 1. Subtract the electronegativity values. An ionic bond should have a value GREATER THAN Is the compound made from a metal.

CHEMISTRY PART 6 Ionic Compounds Charges of transition metals will be given in the periodic table as their formation is complicated.

Practice for Ionic Compounds Test What is a negative ion called?

THE CRISSCROSS METHOD &POLYATOMIC IONS Unit 6: Chapter 6.3a.

Naming Ionic Compounds. Rules Name the metallic ion (cation) 1 st (whole name) Name the nonmetallic ion (anion) 2 nd, but change the ending to “ide” The.

1 Chapter 5 Ionic Compounds 5.1 Octet Rule and Ions Copyright © 2008 by Pearson Education, Inc. Publishing as Benjamin Cummings.

ion: a charged atom that has gained or lost an electron  atoms that lose electrons become ___ ions (called cations)  atoms that gain electrons become.

Ionic & Covalent Bonding

Ionic Compounds.

Types of Chemical Bonds

Q/ A How would a compound form when Lithium is combined with Phosphorous? How many atoms of each would their be ? How would we write this out at a compound.

March 21st Chemical Compounds and Formulas and Diagrams 21.

Ionic Compounds and Naming of Ionic Compounds Chapter 7

Aim: How do we name binary ionic compounds given the chemical formula

Bundle 2: Periodic Table and Bonding

How Atoms Combine Part 2.

Naming Ionic Compounds

Chemical Formula Tells the relative number of atoms of each element in a compound Molecular: (covalent bonding) Formula represents the number of atoms.

Ionic Compounds: Writing Formulas

Ionic bonding Day #2.

Ions & formation of Ionic compounds

Ionic Bonding Notes

Chapter 4 Compounds and Their Bonds

Writing Chemical Equations

Naming Ionic Compounds

Chapter 4 Compounds and Their Bonds

IONIC BONDS Chapter 4 Section 1.

Chapter 4 Compounds and Their Bonds

Ionic Compound Naming Taking electrons, not sharing them.

Chapter 2 The Material World

Chapter 4 Compounds and Their Bonds

Ionic Compounds.

IONIC BONDS What are Ionic Bonds? Writing Compounds.

IONIC COMPOUNDS Chapter 5.8 DAY 1.

Warm Up #1 Draw the electron configuration (rings) for sodium.

Chapter 4 Compounds and Their Bonds

Write down the stuff in red

Binary Compound Binary Compounds are composed of two elements bonded together One METAL Ion and One NONMETAL Ion for Ionic Compound Metal atoms lose electrons.

Ionic Compounds: Writing Formulas

Naming Ionic Compounds.

Chemical Nomenclature

Presentation transcript:

Chapter 2 The Material World Molecules Chapter 2 The Material World

Forming Ionic Compounds (Simple)

Mg+2 Cross Over Method Mg 12p+ +12 10e- -10 +2 2 valance e- Wants to lose 2 e- to achieve full octet If Mg loses 2 e-  now has 12p+ and 10e- Mg+2 12p+ 10e- +12 -10 +2

F-1 Cross Over Method F 9p+ +9 10e- -10 -1 7 valance e- Wants to gain 1e- to achieve full octet If F gains 1 e-  now has 9p+ and 10e- F-1 9p+ 10e- +9 -10 -1

Mg+2 F-1 Mg1F2 Do not have to show “1”

+2 F -1 Mg 1 2 Do not have to show “1” MgF2

Examples: Al+3 S-2 Al2S3

Ca+2 O-2 Ca2O2 Ca1O1

Naming Ionic Compounds

Naming Ionic Compounds RULE: Metal Name + Non-Metal Name (modified ide ending) Examples: CaCl2  Calcium Chloride MgO  Magnesium Oxide Na2S  Sodium Sulfide Ignore the subscripts!