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Chemistry science fair project:
The Effect of Candle Wax Hardness on the Burning Time of a Candle




 

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  • The Orchid Grower - A Juvenile Forensic Science Adventure Novel

    The Orchid Grower
    A Juvenile Forensic Science Adventure Novel
    Science Fair Project Information
    Title: The Effect of Candle Wax Hardness on the Burning Time of a Candle
    Subject: Chemistry
    Grade level: Elementary School - Grades 4-6
    Academic Level: Ordinary
    Project Type: Experimental
    Cost: Low
    Awards: Award of Distinction for Clarity of Presentation from the Regional Mid-Columbia Science Fair (2006) and a Honorable Recognition from the Society of Woman Engineers.
    Affiliation: Selah Intermediate School
    Year: 2006
    Description: Candles are made from paraffin wax by adding different amounts of hardener; burning time is recorded.
    Link: http://www.selah.k12.wa.us/SOAR/SciProj2006/JordanK.html
    Short Background

    A candle is a stick made of wax with a string (a thin piece of rope) straight in the middle. If someone puts the string on fire, the flame will burn slowly and for a long time.

    Fire can burn most string very fast. But in a candle, the string does not burn fast, because the fire melts the wax instead. The wax sometimes drips down the side of the candle. When the melted wax is far from the flame, it gets hard again, and can be used again a new candle.

    The flame is very hot, since it is a very small, real fire. It can still burn people and things. If the fire spreads, it can grow into a very big fire and even burn down a house or building.

    If the flame is kept on the candle long enough, the candle will slowly get shorter and shorter until it is gone. The fire on a candle can be put out by blowing air on it. There is also a special tool called a "candle snuffer" that covers the fire with a small metal cup and puts it out. Today, candle snuffers are usually only used in churches or in places where candles are up very high. Stopping the fire stops the candle from burning until it is all gone.

    Before light bulbs, candles were used so people could see at night. Some people still use candles today when electricity is broken, or because they like the little amount of light that candles make. Some people also like candles because they look nice, or because they smell nice. A special kind of candle called "citronella" can help keep bugs away.

    Candles are expensive and the amount of light that they give is small.

    Source: Wikipedia (All text is available under the terms of the GNU Free Documentation License)

    For More Information: Candles

    Source: Wikipedia (All text is available under the terms of the GNU Free Documentation License)


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