1. Austin High School 2016 Bonding Ms. Lizette Gutierrez
Electron Glue
Austin High School 2016
Bonding
Ms. Lizette Gutierrez

2. ChemCatalyst Hello Chemistry Student:
Shade in the metals on this Periodic Table.
Identify whether these are Metals or Non-Metals : Ca P Ag At Ne In Mg H
Hello Chemistry Student:
You will need your notebook and a copy of the lab.
Complete the following ChemCatalyst, writing your answers on the lab paper.

3. What is the Purpose of Today’s Activity?
To investigate the different types of bonding found in substances and to relate bonding to the physical properties of substances.

4. What is a Chemical Bond?
An attraction between atoms that hold them together in space.
Four Types of chemical bonds:
Ionic Bond
Network Covalent Bond
Metallic Bond
Molecular Covalent

5. Types of Bonds

7. Ionic Bonding
A type of chemical bonding that is the result of transfer of electrons from one atom to another.
The gray shading shows that the valence electrons are concentrated around the nonmetal atoms.
The strong attraction between the oppositely charged ions is the force that holds the ions together in the compounds.
This force of attraction makes ionic solids fairly hard, although they are brittle and will shatter when struck hard
Ionic solids dissolve in water.
The atoms that makeup the compounds remain ion, but the individual ions separate from one another
Once dissolved they will conduct electricity

8. Network Covalent Bonding
A type of chemical bond in which one or more pairs of valence electrons are shared between the atoms. Covalent bonding can be molecular covalent or network covalent.
Valence electrons are “shared” among atoms
In network covalent bonding, valence electrons are shared among atoms throughout the substance
Very uniform and durable structure
Typically solid at room temperature
Very hard and do not dissolve in water
Valence electrons are not free enough to move about the substance and conduct electricity

9. Metallic Bonding
A bond between metal toms in which the valence electrons are free to move through the substance.
Metal atoms surrounded by a “sea” of valence electrons
Metals are hard but bendable and malleable
Usually dent when hit with a hammer
They are ductile (made into wire)
They conduct electricity
Distribution of the valence electrons throughout the substance allows the electrons to move freely

10. Molecular Covalent Bonding
A type of chemical bond in which one or more pairs of valence electrons are shared between the atoms. Covalent bonding can be molecular covalent or network covalent.
Valence electrons are shared among the atoms
Unlike the atoms in network covalent substances, atoms in molecular covalent substance are not connected throughout the substance
Atoms are connected in many identical units called molecules
Units may be composed of only two atoms or they may be composed of dozen of atoms
Substances are often gases or liquids at room temperature