'Valence shells' diaporamas de présentation

The Modern Periodic Table

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Matter is composed of either

CHEMICAL BONDING. Matter is composed of either. (1) Metals and Nonmetals (2) Metals (3) Nonmetals. - Ions - Atoms - Molecules. - Ionic Bonding - Metallic Bonding - Covalent Bonding. Chemical bonding involves the valence electrons of atoms.

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Formula

Formula. The formula for water ( H 2 O ) is a combination of symbols and subscripts. H and O are the symbols for the two types of elements ( H ydrogen and O xygen) found in water. The 2 is called a subscript , representing the number of atoms present.

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What is Anatomy and Physiology?

What is Anatomy and Physiology?. A&P.

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Chemical BONDING

Chemical BONDING. Chemical Bond. A bond results from the attraction of nuclei for electrons All atoms trying to achieve a stable octet IN OTHER WORDS the p + in one nucleus are attracted to the e- of another atom Electronegativity. You complete me. What did the atom of fluorine.

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Building Atoms

Building Atoms. OBJECTIVES. REVIEW ATOMIC CONCEPTS BUILD MODELS OF ATOMS AS A REVIEW BUILD MODELS OF IONIC BONDING BUILD MODELS OF COVALENT BONDING BUILD MODELS OF HYDROGEN BONDS COMPARE & CONTRAST IONIC, COVALENT AND HYDROGEN BONDING. BUILD A HELIUM ATOM.

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General, Organic, and Biochemistry, 7e

General, Organic, and Biochemistry, 7e. Bettelheim, Brown, and March. Chapter 3. Chemical Bonds. Atoms and Their Ions. In 1916, Gilbert N. Lewis pointed out that the lack of chemical reactivity of the noble gases indicates a high degree of stability of their electron configurations.

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Basic Chemistry

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Do Now:

Do Now:. decreases. 1. Atomic radius ________ from left to right across a period and _________ down the group. 2. Circle the element with the larger atomic radius . Justify your choice citing the trend in a sentence. Sodium vs. Rubidium

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CHAPTER 2 CHEMISTRY & LIFE

CHAPTER 2 CHEMISTRY & LIFE. Organisms are composed of matter. Matter takes up space and has mass. An element is a substance that cannot be broken down into other substances by chemical reactions. 92 naturally-occurring elements. Each element has a unique symbol.

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Covalent & Ionic Bonding

Covalent & Ionic Bonding. The Sharing and Transferring of Electrons. The Difference Between Ionic & Covalent Bonding. http:// www.youtube.com/watch?v=QqjcCvzWwww. What W e K now About Ionic B onding.

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Ambident Nucleophiles

Ambident Nucleophiles. ? +. By Jane Moore June 2004. What is an Ambident Nucleophile?. Certain nucleophiles may be represented by two or more resonance forms, in which an unshared pair of electrons may reside on different donor atoms. Examples include:- Cyanide Thiocyanate Amide anion

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Chemical bonding

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Covalent and Metallic Bonds

Covalent and Metallic Bonds. How are these two items different?. Covalent bonds. Metallic bonds. Covalent Bonds. Most things are held together with covalent bonds. Characteristics. Usually low melting points Brittle in solid state. Ex: Oxygen low boiling point

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Review

Review. Reading the Periodic Table: Classification. Nonmetals, Metals, Metalloids, Noble gases . Alkali Family: 1 e- in the valence shell. Halogen Family: 7 e- in the valence shell. Down the Periodic Table.

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Lesson Objectives Draw electron dot formulas Ionic compounds Covalent compounds

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2.5 Chemical Bonding

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Forming Compounds

Forming Compounds. Compounds. pure substances containing two or more elements in fixed proportions when atoms collide , valence electrons interact to make valence shells stable (like that of nearest noble gas). Two Types of Compounds. Atom may gain electrons Atom may give up electrons.

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Organic Chemistry

Organic Chemistry. William H. Brown Christopher S. Foote Brent L. Iverson. Organic Chemistry. The study of the compounds of carbon Over 10 million compounds have been identified - about 1000 new ones are identified each day! C is a small atom - forms single, double, and triple bonds

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Daily Science pg. 40

Daily Science pg. 40. Why do scientist use electron configurations and orbital diagrams? Write the electron config . and orbital diagrams for the following elements: Potassium, Nitrogen, Nickel, Argon, Gallium, and Zinc

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