Tuesday, January 18, 2011

Day 5 Activity 1 1/18/11 Burning Candle Observations

What is burning? Show the chemical formula and an image of the structure.



Write the chemical reaction.

Write the balanced chemical reaction.

Fire notes:
-Everything that burns has to be in a gas form
-Butaine goes from a liquid to a gas in a butaine lighter

4 comments:

  1. 1. When a candle is lit the wax is burned from the candle due to the heat of the flame. Wax is made of paraffin which is a combination of methane molecules. Paraffin molecule combination is CnH2n+2. The paraffin wax mixed with oxygen creates the burning candle reaction.

    2.As a result a new chemical combination is formed. C O 2 + 2 H 2 O Carbon di oxide and water. Which is released as a gas form.

    3. The chemical formula and the balanced chemical reaction is:
    2 O2 + C H 4 = C O 2 + 2 H 2 O

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  2. Sources:

    http://www.math.harvard.edu/~knill/pedagogy/waterexperiment/index.html

    http://en.wikipedia.org/wiki/Paraffin

    http://en.wikipedia.org/wiki/Candle

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  4. Balance the equation:

    C25 H52 + O2 --> H20 + CO2

    25 gets moved over to CO2= 25 CO2

    Then i did 52/2 = 26 the number of water on the other side of the equation = 26 H2O

    Now I have to find and balance the oxygen.
    So I did 25 the number of CO2 (25*2=50) 50 the number of oxygen in CO2.

    Then I did 50 +26=76 oxygen on the right side of the equation. 76/2= 38 the number that should be on the other side of the equation.

    The balanced equation looks like:
    C25 H52 + 38 O2 --> 26 H2O + 25 CO2

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