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Do Now. Compared to a calcium atom, the calcium ion Ca2+ has more protons fewer protons more electrons fewer electrons. What is the correct Lewis electron-dot structure for the compound magnesium fluoride?. Covalent Bonding. Williamsburg High School for Architecture and Design
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Do Now • Compared to a calcium atom, the calcium ion Ca2+ has • more protons • fewer protons • more electrons • fewer electrons • What is the correct Lewis electron-dot structure for the compound magnesium fluoride?
Covalent Bonding Williamsburg High School for Architecture and Design Mr. Quinn and Ms. Tom 11/18/13
Aim • How do atoms share electrons?
From last week… • Ionic bonds are a metal and a nonmetal • They make compounds called salts
New Information group of non-metals that bonds by sharing electrons and has no charge • Same or different atoms • Covalent bonds • Low melting/boiling point Molecule
A&D vs. Regents, Round 1 • Covalent bonds are formed when electrons are • transferred from one atom to another • captured by the nucleus • mobile within a metal • shared between two atoms
A&D vs. Regents, Round 2 • As a bond between a hydrogen atom and a sulfur atom is formed, electrons are • shared to form an ionic bond • shared to form a covalent bond • transferred to form an ionic bond • transferred to form a covalent bond
A&D vs. Regents, Round 3 • Which type of bonding is found in all molecular substances? • covalent bonding • hydrogen bonding • ionic bonding • metallic bonding
A&D vs. Regents, Round 4 • A molecular compound is formed when a chemical reaction occurs between atoms of • chlorine and sodium • chlorine and yttrium • oxygen and hydrogen • oxygen and magnesium
A&D vs. Regents, Round 5 • In which compound do atoms form bonds by sharing electrons? • H2O • Na2O • CaO • MgO