Observation And Patterns In A Candle Lab
There were a numerous amount of observations and patterns in the data throughout the candle lab. The hypothesis was if the amount of candles inside the jar increases by an increment of one, then the weight of water in the jar will increase as well. The hypothesis was proven to be true, since for every candle added there was about 33 grams of water more. Every time the jar was placed over the candles, there would always be bubbles around the rim, also as more candles were used, the jar became cloudier and the bottom of the jar became more charred. The bottom of the jar also got hot, and after the jar was taken off the candles there would be grey smoke. The flame got larger as more candles were added, and the smell remained constant. With more
candles lit, the amount of water increased more in the jar. The flames need oxygen to keep burning, but when the jar is put over the candle, the oxygen starts getting used up by the flame. Eventually the oxygen in the jar will get used up and the flame will go out. There are still other gases in the jar but the gases have a lower pressure inside the glass than outside the glass. To balance the pressure, more water starts to be pushed into the glass, which is why there is an increase in water. There was also an observation of the bubbles forming around the jar. The candle heats the air inside the jar, which causes the heated air to expand. The hot air starts to come out from under the glass, which is why there are bubbles. Eventually the flame goes out and air inside begins to cool, which makes air contract inside the glass container. Contraction pulls the water from outside and into the jar. For strengths, the same person weighed the water, the same person put clay around the jar, and the same person said when to pour out the water. Having the same person doing a task improves the data collected because one person may not do it the same as the other, and it is better to have a constant for the same results. Also the candles used were all relitable, so the data collected would be applicable for all the same types of relitable candles. For weaknesses, there could have been a better way of saying when to pour out the water, instead it being just one persons opinion. Also, there could have been a set time on how long after the candle is lighted to put the jar over the candle.
candles lit, the amount of water increased more in the jar. The flames need oxygen to keep burning, but when the jar is put over the candle, the oxygen starts getting used up by the flame. Eventually the oxygen in the jar will get used up and the flame will go out. There are still other gases in the jar but the gases have a lower pressure inside the glass than outside the glass. To balance the pressure, more water starts to be pushed into the glass, which is why there is an increase in water. There was also an observation of the bubbles forming around the jar. The candle heats the air inside the jar, which causes the heated air to expand. The hot air starts to come out from under the glass, which is why there are bubbles. Eventually the flame goes out and air inside begins to cool, which makes air contract inside the glass container. Contraction pulls the water from outside and into the jar. For strengths, the same person weighed the water, the same person put clay around the jar, and the same person said when to pour out the water. Having the same person doing a task improves the data collected because one person may not do it the same as the other, and it is better to have a constant for the same results. Also the candles used were all relitable, so the data collected would be applicable for all the same types of relitable candles. For weaknesses, there could have been a better way of saying when to pour out the water, instead it being just one persons opinion. Also, there could have been a set time on how long after the candle is lighted to put the jar over the candle.