Candle Burning Temperature Lab Report
INTRODUCTION
Candles have been used by humans as a source of light and during celebrations for more than 5000 years, although no one really knows where they originated.
In order for a candle to burn, a source of heat is used to light the candles wick. The wick melts and burns up a small amount of the wax which then combines with oxygen in the air and ignites a flame.
Fire is heat produced by a chemical reaction. Oxygen combines with carbon and hydrogen and creates carbon dioxide, carbon monoxide and H2O. The heat from the fire is the energy that has been released from this reaction.
A flame burns out when in a closed jar because the flame needs to get oxygen from the air in order to carry on burning. When you close the jar, you are limiting the amount of oxygen the candle has access to. This causes the candle to use up all the oxygen and release carbon dioxide, so the chemical reaction can’t continue which results to the flame burning out.
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Carbon dioxide: a colourless and odourless gas (CO 2) present in the atmosphere and formed during respiration.
Fire: a state or process of burning where fuel or another material is set alight and combined with oxygen resulting in it giving off light, heat, and a flame.
INVESTIGATIVE QUESTION
What is the relationship between the duration of the time a candle burns and the size of the jar it is inside of?
HYPOTHESIS
As the size of the jar increases, so will the period of time the candle burns for.
VARIABLES
INDEPENDENT: The size of the jar
DEPENDENT: The amount of time the candle burns for
CONTROLLED: The type of candles used, the type of glass the jars were made from, the type of matches
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