Balancing Chemical Equations
Created 2 years ago
This presentation will review basic terminology needed and teach students how to balance chemical equations.
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Slide 1 - BALANCINGCHEMICAL EQUATIONS
- By Elizabeth Jarrett
Slide 2 - The smallest part of an element capable of taking part in a chemical change (Dictionary of Unfamiliar Words by Diagram Group, 2008).
- What is an atom?
Slide 3 - The smallest particle of a substance that retains the chemical and physical properties of the substance and is composed of two or more atoms; a group of like or different atoms held together by chemical forces (thefreedictionary.com).
- Example: hydrogen molecule
- Molecular formula: H2
- The six other diatomic molecules include Bromine, Iodine, Nitrogen, Chlorine, Oxygen, and Fluorine
- Br2 I2 N2 Cl2 O2 Fl2
- What is a molecule?
Slide 4 - More Examples of Molecules
- Here are some examples with which we are all familiar:
- carbon dioxide
Slide 5 - Each molecule has a definite number of atoms of each element. These numbers are written as subscripts below each letter.
- Uracil Adenine
- What is a molecular formula?
Slide 6 - A quiz will keep you active and awake.
- A quiz will help you know if you understood the material that is being presented; if not, you might want to rewind and view the first section again.
- Some questions will help you to stretch your thinking and see if you can apply the information to new situations.
- Let’s check your understanding with a short quiz.
Slide 11 - Now let’s learn how to
- balance chemical equations!
Slide 14 - Let’s Practice!
- Click on the image below to begin using the simulator:
- If link does not work, type the following address into your browser:
Slide 15 - Khan Academy practice questions:
Slide 16 - Additional practice:
- Balancing Equations Practice Video
- Interactive Quiz by Jefferson Lab
- Printable Worksheets with Answers
Slide 18 - Sources
- Atom. (n.d.) Dictionary of Unfamiliar Words by Diagram Group. (2008). Retrieved June 10 2015 from http://www.thefreedictionary.com/atom.
- Bozeman Science. A Beginner’s Guide to Balancing Chemical Equations. Retrieved June 10 2015 from https://www.youtube.com/watch?v=_B735turDoM.
- KahnAcademy. Balancing Chemical Equations 1. Retrieved June 10 2015 from https://www.khanacademy.org/science/chemistry/chemical-reactions-stoichiome/balancing-chemical-equations/e/balancing_chemical_equations.
- Molecule. (n.d.) American Heritage® Dictionary of the English Language, Fifth Edition. (2011). Retrieved June 10 2015 from http://www.thefreedictionary.com/molecule.
- University of Colorado Boulder. PhET Interactive Simulations: Balancing Chemical Equations. Retrieved June 10 2015 from http://phet.colorado.edu/sims/html/balancing-chemical-equations/latest/balancing-chemical-equations_en.html.