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Lewis Structures and Molecule Patterns - Matching 2020

Background: Lewis structures models represent molecules. Each element in a molecule is represented by its chemical symbol. Electrons are represented as dots. Lines are drawn between atoms to show bonds; each line/bond connects two single electrons. Excess electrons are represented as pairs of dots and are placed next to the atoms.
Gilbert Newton Lewis (October 25, 1875 – March 23, 1946) was an American physical chemist known for the discovery of the covalent bond and his concept of electron pairs; his Lewis dot structures and other contributions to valence bond theory have shaped modern theories of chemical bonding. Lewis Structure Drawings are models that are used to represent molecules.
Directions: Look for patterns and match what you see. Repeat at least 3 times.
AB
This gas is composed of 1 element. Each atom within the molecule makes 1 bond.Hydrogen,
This gas is composed of 1 element. Each atom within the molecule makes 2 bonds.Oxygen,
This gas is composed of 1 element. Each atom within the molecule makes 3 bonds.Nitrogen,
What element makes 4 bonds in this methane molecule?Carbon,
Hydrogen can be found in ____ of the periodic table.Column 1,
Nitrogen can be found in ____ of the periodic table.Column 5,
Oxygen can be found in ____ of the periodic table.Column 6,
Fluorine can be found in ____ of the periodic table.Column 7,
Neon (a noble gas) can be found in ____ of the periodic table., Column 8,
Oxygen is in column 6 of the periodic table, therefore......it makes two bonds.,
Nitrogen is in column 5 of the periodic table, therefore......it makes three bonds.,
Fluorine is in column 7 of the periodic table, therefore......it makes 1 bond.,
Noble gasses are in column 8 of the periodic table, therefore......they don't make any bonds.,
How many valance electrons does Hydrogen have after it bonds?It has 2 valence electrons after bonding.,
How many valence electrons do 99% of elements have after they bonds?They have 8 valence electrons after bonding.,
The _____ Rule reflects observation that bonded atoms tend to have 8 electrons in its outer shellOctet,
Two exceptions to the Octet Rule are:Hydrogen and Helium gas; their rings are complete with 2 electrons.,
A molecule is......when two or more atoms bond together.,
How many different elements are found in the periodic table?90-92 elements are found.,
Which subatomic particle makes elements, elements?Protons make elements what they are.,
Gilbert Lewis discovered the covalent bond and..., ... created "Lewis Structures" that show how elements bond.,


Mr. Hand
8th Grade Science and Algebra Teacher
Mansfield Middle School
Storrs, CT

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