Balancing Chemical Equations

This presentation will review basic terminology needed and teach students how to balance chemical equations.

ChemistryRatio and Proportion
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Balancing Chemical Equations

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This presentation will review basic terminology needed and teach students how to balance chemical equations.
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Slide Content
  1. BALANCINGCHEMICAL EQUATIONS

    Slide 1 - BALANCINGCHEMICAL EQUATIONS

    • By Elizabeth Jarrett
    • Products
    • Reactants
  2. The smallest part of an element capable of taking part in a chemical change (Dictionary of Unfamiliar Words by Diagram Group, 2008).

    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?
  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).

    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?
  4. More Examples of Molecules

    Slide 4 - More Examples of Molecules

    • Here are some examples with which we are all familiar:
    • Water
    • H2O
    • H
    • H
    • H
    • O
    • stomach
    • lungs
    • methane
    • CH4
    • carbon dioxide
    • CO2
    • O
    • O
    • C
    • H
    • H
    • H
    • H
    • C
  5. Each molecule has a definite number of atoms of each element.  These numbers are written as subscripts below each letter.

    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?
  6. A quiz will keep you active and awake.

    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.
  7. Now let’s learn how to

    Slide 11 - Now let’s learn how to

    • balance chemical equations!
  8. Let’s Practice!

    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:
    • http://phet.colorado.edu/sims/html/balancing-chemical-equations/latest/balancing-chemical-equations_en.html
  9. Khan Academy practice questions:

    Slide 15 - Khan Academy practice questions:

  10. Additional practice:

    Slide 16 - Additional practice:

    • Balancing Equations Practice Video
    • Interactive Quiz by Jefferson Lab
    • Printable Worksheets with Answers
  11. Sources

    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.