Review - Mrs. Harrell's Webpage

Review - Mrs. Harrell's Webpage

Review Ionic is a _______________ and a ________________ Covalent is a ______________ and a _________________ Complete a dot diagram and a Bohr model for the following elements: Ca

and S Atomic Stability Noble gases have a full outer shell (do not form compounds) Noble gases do not lose/gain/share electrons An atom is stable when it has a full electron

shell (gains, loses, shares) The force that holds the atoms together is called a chemical bond Chemical bonds can be ionic or covalent 2 main types of compounds Covalent Binary

ionic Ionic or Covalent? PO4 SO4 CaF NH3 LiBr NaCl

BeO H 2O RbS KI CO NO3 Covalent Bonds involve

the sharing of a pair of valence electrons by two atoms Such bonds lead to stable molecules if they share electrons in such a way as to create a noble gas configuration for each atom Covalent (Molecular) Compounds Gases, liquids, or solids (made of molecules) Low melting and boiling points Poor electrical conductors in all

phases Very brittle WEAK BONDS Covalent naming be 2 nonmetals!!!!! Use prefixes when naming P2O5 Mono- 1

Di- 2 Tri- 3 Tetra- 4 10

Penta- 5 Hexa- 6 SO3 Hepta- 7 Octa- 8

Must Nona- 9 Deca - Practice: Name the following IF5 N2O5 P4O10 P2S5 SF6 Writing Formulas for Covalent Make

sure it is 2 nonmetals!!!! Use prefixes!!!! Dihydrogen monoxide = H2O1 Tetracarbon C4S5 pentasulfide = Practice Writing Covalent Formulas Sulfur Octachloride Triphosphorous

monoflouride Pentanitrogen diiodide Na , 11 e Na + , 10e Ion - an atom with an electric charge due to the loss or gain of electrons. Same #p and #n

Different #e A Positive Ion (Cation): An atom that has lost one or more electrons. + charge A Negative Ion (Anion) An

atom that has gained one or more electrons. Negatively (-) charged. Chlorine Atom Chlorine Ion Ionic Compounds Made of cations and anions Metals and nonmetals

The electrons lost by the cation are gained by the anion The cation and anions surround each other Smallest ratio of ions in an ionic compound is a FORMULA UNIT. Properties of Ionic Bonds Solid at room temperature High melting and boiling points

Soluble in water Good electrical conductors in liquid phase STRONG BONDS When atoms transfer electrons Ionic Bonds

When one or more atoms lose electrons and other atoms gain them in order to produce a noble gas electron configuration, the bond is called an ionic bond. Ionic Bonding metallic atoms tend to lose electrons When they do so, they become positively charged ions which are called cations.

Nonmetallic atoms tend to gain electrons to become negatively charged ions which are called anions. These oppositely charged cations and anions are attracted to one another because of their opposite charges. That attraction is called an ionic bond. We often

refer to the charge on the ion as the oxidation state of that element. Binary Ionic rules for naming Has to be a metal and a nonmetal!!!!!! Determine Keep the name for the symbols given the name of the metal as it is

Replace the ending on the 2nd element with ide FeO PbF2 Practice: Name the following MgO HgI CuI LiBr CaS

Oxidation Numbers (Review) Writing Formulas for Binary Ionic Make sure it is a metal and a nonmetal!!! Find the symbols for the elements Find

the oxidation numbers for each element Crisscross (or least common multiple) Calcium Chloride = Ca Cl Ca=

+2 , Cl = -1 (now crisscross) CaCl2 Magnesium MgBr2 Bromide = Practice Writing Binary Ionic Formulas Lithium sulfide

Aluminum fluoride Barium phosphide Rubidium iodide Mixed Practice Decide which are ionic and which are covalent and then name them MgS P2O7 H2Br4 MnCl2

Recently Viewed Presentations

  • The correlation of Demand and Supply shocks - Evidence from ...

    The correlation of Demand and Supply shocks - Evidence from ...

    MSc Student: Dumitru Daniel ... Hodrick Prescott filter and Band Pass filter using program codes in Eviews 5.1. For the Wavelet transformation we wrote a procedure in Matlab 7.1. ... The correlation of Demand and Supply shocks - Evidence from...
  • Population and Economic Growth

    Population and Economic Growth

    Poverty Threshold. Poverty Threshold- annual dollar income used to determine the number of people in poverty. In 1776 Adam Smith in the Wealth of Nations argued that poverty is the inability to afford, "not only the commodities which are indispensably...
  • Kadesha Nicholas, MHA As an early careerist, Kadesha

    Kadesha Nicholas, MHA As an early careerist, Kadesha

    Mrs. Pam Manning dedicated her life to serving others; she's a wife to her husband Michael and a mother to three lovely children (Aron, Alycia & Ian). Pam is a Board Certified Adult-Gerontological Nurse Practitioner and a Master's Degree in...
  • Jones, Branden - ABS Presentation (PPT)

    Jones, Branden - ABS Presentation (PPT)

    Anti-Lock Braking Systems Branden L. Jones, CSP, OHST Manager - EH&S Texas New Mexico Power Fort Worth, Texas Pop Quiz Does Anti-Lock Brake System (ABS) usage follow conventional driver training?
  • CSE 501N Fall '06 02: Machine Overview + Fundamental Types

    CSE 501N Fall '06 02: Machine Overview + Fundamental Types

    CSE 501N Fall '09 08: Control Flow 24 September 2009 Nicholas Leidenfrost Lecture Outline Lab 2 questions Control Flow and Loops The break Statement The continue Statement The return Statement Array Exercises Control Flow Recall that control flow (a.k.a. flow...
  • How to use Vivo A Student Guide What

    How to use Vivo A Student Guide What

    Vivo is the new way to be rewarded as you progress through school life Teachers will award you with electronic points called Vivos - the new student currency You can then spend your Vivos on an exciting range of products...
  • Suggestion on How to Use  Industry Trainers are

    Suggestion on How to Use Industry Trainers are

    Example of a photovoltaic power sources in addition to the utility. Other sources might include hydro, wind, PV, fuel cell, and on-site generator. This Article covers the connection of various types of alternative power sources that are normally connected in...
  • Culture Chapter 3 I am Write down 5

    Culture Chapter 3 I am Write down 5

    Formal norms: generally written; specify strict punishments. Informal norms: generally understood but not precisely recorded. Sanctions. Penalties and rewards for conduct concerning a social norm . Sanctions associated with formal norms tend to be formal as well. Fabric of norms...