'Unpaired electrons' diaporamas de présentation

The nucleus contains positively charged protons and uncharged neutrons. The electron cloud is composed of negatively cha

Structure and Bonding. The Periodic Table. The nucleus contains positively charged protons and uncharged neutrons. The electron cloud is composed of negatively charged electrons. The Periodic Table. Figure 1.1 A comparison of two isotopes of the element carbon.

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Reactive Oxygen Species

Reactive Oxygen Species. I. Free radicals & ROS Defined II. Sources of ROS III. Oxidative damage in biological systems IV. Antioxidant Defense V. ROS signaling and redox sensitive pathways VI. Oxidative stress and disease VII. Detection methods for ROS & oxidative stress.

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Energy level Sublevel # of orbitals/sublevel n = 1 1 s ( l = 0 ) 1 ( m l has one value) n = 2 2 s ( l = 0 ) 1 ( m l has one value) 2 p ( l = 1 ) 3 ( m l has three values)

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Understanding Organic Reactions

Understanding Organic Reactions. Writing Equations for Organic Reactions. Equations for organic reactions are usually drawn with a single reaction arrow ( ?) between the starting material and product.

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Chapter 1 Introduction and Review

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Chapter 5

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2.3 Electron Arrangement

2.3 Electron Arrangement. 2.3.1 Describe the electromagnetic spectrum 2.3.2 Distinguish between a continuous spectrum and a line spectrum 2.3.3 Explain how the lines in the emission spectrum of hydrogen are related to electron energy levels

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Energy and Life Ground Rules of Metabolism

Energy and Life Ground Rules of Metabolism. Chapter 5. Growing Old with Molecular Mayhem. Free radical A molecule that has unpaired electrons Highly reactive, can disrupt structure of molecules. Superoxide Dismutase.

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Valence Bond Theory

Valence Bond Theory. How do bonds form?. The valence bond model or atomic orbital model was developed by Linus Pauling in order to explain how atoms come together and form molecules.

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Physics of Magnetism

Physics of Magnetism. Physical Principles of Magnetism. In order to understand how rocks, or, more correctly, the magnetic minerals present within the rock, retain a record of the Earths magnetic field we need to have some understanding of the basic physics behind the process.

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Antiferromagnetic resonance in frustrated system Ni 5 (TeO 3 ) 4 Br 2

Antiferromagnetic resonance in frustrated system Ni 5 (TeO 3 ) 4 Br 2. Matej Pregelj Mentor: doc. dr. Denis Ar?on. Contents. Introduction Magnetic materials Frustration Measurements of magnetic order Antiferromagnetic resonance Experimental results on Ni 5 (TeO 3 ) 4 Br 2 Analysis

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Atom video

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Chapter 1 Introduction and Review

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The Electronic Structure of Atoms Classical Hydrogen-like atoms:

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Ch. 4: Alcohols and Alkyl Halides

Ch. 4: Alcohols and Alkyl Halides. alcohol alkyl halide (X= F, Cl, Br, I). 4.1: Functional Groups - >11 million organic compounds which are classified into families according to structure and reactivity.

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Polar bonds and molecular polarity

Polar bonds and molecular polarity . Degrees between ionic and covalent. Sharing two electrons effectively doubles the count. In the molecule F 2 : Each atom wants 8 Alone each has seven Together they have eight Single covalent bond. H. H. O. O. H. H.

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Combining Atoms and Molecules

Combining Atoms and Molecules. 5-1: How Atoms Form Compounds. Vocabulary. compound chemical formula molecule ionic bond chemical bond Lewis dot diagram valence covalent bond organic compound. What is a Compound?. A compound is a pure substance that contains two or more elements.

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Oxidants and Aging

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Superconductivity

Superconductivity. Resistance goes to 0 below a critical temperature T c element T c resistivity (T=300) Ag --- .16 mOhms/m Cu -- .17 mOhms/m Ga 1.1 K 1.7 mO/m Al 1.2 .28 Sn 3.7 1.2

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