Study Guide, Chapter 2

Study Guide, Chapter 2 - bonds, the shape of which is...

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BSCI105, Freshman Connection Fall 2010 Study Guide #2 I. Fundamentals of Chemistry Vocabulary: Element Compound Molecule Proton Neutron Electron Isotope Atomic number Atomic mass Shell Orbital Valence Bond Covalent Ionic Electronegativity Polarity Ion Key Concept 1: Each element has a unique atomic number depending on number of protons, and atomic mass depending on total protons and neutrons in the nucleus. Key Concept 2: Elements are made of atoms, with electrons in shells with orbitals that each hold a pair of electrons, and their chemical nature is a function of their unpaired valence electrons. Key Concept 3: Compounds are associated atoms sharing electrons, either through ionic or covalent
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Unformatted text preview: bonds, the shape of which is determined by geometry of valence orbitals. Key Concept 4: Electrons are shared by atoms joined by covalent bonds, allowing both to fill their orbitals. Key Concept 5: Unequal sharing of electrons is caused by asymmetric electronegativity, resulting in polar bonds and polar compounds that participate in hydrogen bonding. Key Concept 6: Ionic bonds involve stripping of electrons from one atom by another, which stay associated by charge interactions....
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