'Electron s' diaporamas de présentation

Basic Chemistry:

Basic Chemistry:. Elements & Atoms. I. Elements & Atoms. Element. _________ = A substance that cannot be broken down into simpler substances. Periodic Table 1-92 occur in _______ (natural elements) 93 and above are ___________ (man-made). nature. synthetic. Trace Elements:

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Entry Task: Oct 16 th Block 1

Entry Task: Oct 16 th Block 1. Provide the name or formula for the following NO DiPhosphorus pentaoxide C 4 H 8 Boron monocarbide. Agenda:. Discuss Lewis Dot ws Ch. 9 FLASH LECTURE Start VSEPR Activity.

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Tables

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Tables

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Chemical Bonds

Chapter Nine. Chemical Bonds. Chemical Bonds: A Preview. Forces called chemical bonds hold atoms together in molecules and keep ions in place in solid ionic compounds.

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Chemical Bonds

Chapter Nine. Chemical Bonds. Chemical Bonds: A Preview. Forces called chemical bonds hold atoms together in molecules and keep ions in place in solid ionic compounds.

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Molecules and Compounds

Molecules and Compounds. Chapter 19. What we will Learn. Relate chemical behavior of an element, including bonding, to its placement on the periodic table Explain how elements form chemical bonds and identify the role of electrons in bonding

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Ionic Compounds

Ionic Compounds. When two atoms approach each other the following may happen: 1. A transfer of electron(s) may occur 2. Leads to the formation of oppositely charged ions 3. These oppositely charged ions are held together by electrostatic attraction (Coulombic attraction)

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Element #8 : Oxygen, Isotopes

Element #8 : Oxygen, Isotopes. 16 8 O 8 Protons 8 Neutrons 99.759% 15.99491462 amu 17 8 O 8 Protons 9 Neutrons 0.037% 16.9997341 amu 18 8 O 8 Protons 10 Neutrons

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Basic Chemistry

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What causes reactivity of elements

What causes reactivity of elements. All atoms want to have a completely full valence shell (normally 8 electrons). For the moment we will only concentrate on main group elements Noble gases are already full.

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Naming Compounds

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Ionic bonding, Lewis Dot Diagrams

Ionic bonding, Lewis Dot Diagrams. Gilbert Newton Lewis (surrounded by pairs of electrons). Please work ahead if you finish a section before the rest of the class. Lewis diagrams (Q1, Q2). Lewis suggested a means of keeping track of outer (or valence) electrons

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