Covalent Molecules And Lewis Structures Worksheet With Answers
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10Mega Molecules, LLC!
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Name: ____________________
Hands-On Science with Molecular Models!
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Date:
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Hour:
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Covalent Molecules and Lewis Structures
Time required: two 50-minute periods
Introduction
To study covalent molecules, chemists find the use of models helpful. Colored plastic
spheres represent atoms.
The spheres have poles which represent the number of
covalent bonds they can form. The poles are at specific angles that approximate the
accepted bond angles.
The links are used to represent bonds.
Single bonds are
represented by one link between two atoms, while double and tripe bonds are shown with
two or three links between two atoms.
In this activity, you will determine the type of bonds in a substance and draw and
construct models of molecules.
Materials
Covalent Bonding and Lewis Structures Model Set
Part I: Types of Bonds
There are two types of bonds - ionic bonds and covalent bonds. They differ in their
structure and properties. Covalent bonds consist of pairs of electrons shared by two
atoms. Whether two atoms can form a covalent bond depends upon their
electronegativity. Electronegativity is a scale used to determine an atom’s attraction for
an electron in the bonding process.
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