Understanding Air Pressure and Candle Effects in Experiments
School
Memorial High School**We aren't endorsed by this school
Course
HISTORY 101
Subject
Chemistry
Date
Dec 10, 2024
Pages
3
Uploaded by MajorSalamander4722
Alannah robareMrs.whiteMod C10/2/24Extension questions1.What statement could you make regarding the composition (make up) of air inside and outsidethe glass during the experimental trials?-The atmosphere is getting trapped into the cup.The pressure in the class is the same pressure inthe cup.The oxygen is what is keeping the flame up.Composition is the same.The heat is makingthe molecules wild up.The composition is not the same when its sealed up.Its the same becausethe oxygen is keeping the flame up.2.What statement could you make regarding the pressure of the air inside and outside the glassduring the experimental trials?-It has the same pressure when it's open with the atmosphere,but once it's sealed off the pressureis more.But once it cools off there's less pressure.3.What effect does the size of the candle have on how high the water rises inside the glass?-The candle that's bigger makes the water rise more even though it's the same amount of water asthe little candle because the bigger candle takes up more space and it blows out quicker but haswater rise more.4.Would the same results occur if you used a wide mouth jar instead of the glass in theexperiment?Explain your statement in as much detail referring to data you recorded?-If I were to use a wide jar instead it would not have the same effect because the wide jar is widerand taller then the glass cup was.5.predict the result if you had the candle diameter(thickness) close to the edges(diameter) of theinverted glass?-If a candle's diameter was nearly the same as the inverted glass opening,because the candlewould likely go out very quickly due to the oxygen within the confined space.6.Predict which of the tree (3) candle flames would extinguish first(1st),a short or a tallcandle?Explain your statement in as much detail referring to data you recorded.
-I think the tall/large white candle would extinguish first because it would take up more spaceand more pressure and it blew out in 8.00 seconds,which is faster than the rest in each of thetrials which took more oxygen up.Quantitative and qualitative observationsIn the lab experiment,each candle had different quantitative and qualitativeobservations.For the small candle, its qualitative Observation Was when we tested it and water mixedwith two drops of blue food coloring,Using a penny to print the glass cup near thecandleWith a pinch of pink Play-Doh to hold the small red candle up. For thequantitative Observation of the small candle the water rose in all three trials differently,2cm,Two. 5 cm,3 cm.It also blew out in different times, 26.89 sec,27.20sec,21.98sec.And for the medium red candle, it's quantitative observations What are thepenny,The pink Play-Doh,And the blue dye water.It's quantitative observation when thewater rose in all three trials were differently,3 cm, 2 cm, 2 cm.The flame blew outdifferently as well,23.46sec,25.52sec,24.11sec.And for the large white candle, it'squantitative observations were the pennyThe pink Play-Doh ,The blue dye water. Itsquantitative observations were when the water rose in all three trials differently,3 cm, 3cm,4.5 cm.But the flame blew out differently in all three trials,13.48sec,15.72sec,8seconds.ConclusionObjectiveAnd this experiment was to find out why the water rose and why the candleblew out at different speeds.The water rose after the flame blew out because thepressure once the oxygen in the glass went out. The volume of the air decreased, untilthe water broke. The candles blew out at different speeds because of the size of thecandle, the larger candles burned out Faster than the small ones because of howmuchSpace it took up and the length of the wick. The main find was how much the
water rises with different candles, and with the larger candle the water rises more thanthe smaller candles in my data.The mainIdeaIn this lab what is a ruler to MeasureHowmuchWater was in the cup,And when it wasn't a complete numberWe would round itupTo the higher numberIn thatIs how we found out how much water was in the cup.AnalysisAnd the larger white candle water rose more than others due to the data in the trialsone, two, and three. Trial 1, the water rose 3 cm, while the small red candle rose 2 cm,Amedium blue candle rose3 cm,In trial 2, the water Rose 4 cm, while the small red candleRose 3 cm, and the medium blue candle roseb2 cm.In the last trial, trial three, the waterrose 4.5 cm, wall the small red candle rose 3 cm, in the medium blue candle rose2cm.The larger white candles flame blew out quicker than both to small red candle andthe blue medium candle due to my data I have collected in trials 1,2 and three.Trial one,the larger white candle, blue out faster, while the small Red candle blew out in 26seconds, in the medium blue candle blew out in 23 seconds. Trial 2 the large candleblowout out in 13 seconds, WhileThe small red candle blew out in 27 seconds, and themedium blue candle blew out in 25 seconds.Lastly in my last trial, the large white candleblew out in eight seconds, while the small red candle blew Out 21 seconds, in themedium Blue candle blew out in 24 Seconds.The only error that occurred in myexperiment was because I did not test all three each time so I had to start over again.For the next experiment I have I will improve to remember to read all the directions verycarefully before starting. I said I will do better answering my questions and alwaysasking for help if I need it.