4. Discussion

Carbon dioxide is classified as a greenhouse gas and is know for trapping heat and causing its surrounding temperature to increase. By pouring coke (with different amount of carbon dioxide), we change the concentration of carbon dioxide in the Biochamber. By exposing the bio chamber to high temperature, we are ‘recreating’ the sun, thereby meaning that the set-up is being exposed to the sun. Also, we by exposing the set-up into the ‘sun’, we will be able to record the temperature of different concentration of carbon dioxide. From the result, we can identify how the carbon dioxide affects the rate of temperature change. From the data collected, we can infer that because carbon dioxide is present, the temperature of the air in the container will increase. However, over time diffusion occurs. Diffusion is the net movement of particles from a region of higher concentration to a region of lower concentration. Henceforth, the amount of carbon dioxide decreases after some time in all of the set-ups.

We found out that although the carbon dioxide is at a very high rate from the very start, it still takes time for the temperature to rise to a certain degree, however, when the carbon dioxide decreased due to diffusion, the temperature does not decreases but, however, remain the same. But on time spans relevant to humans, once released the carbon dioxide is in our environment essentially forever. It does not go away, unless we, ourselves, remove it.(AEDT, 2014) As seen in all of the set-ups, the temperature does not decrease when the carbon dioxide diffuse.

From this findings, we can infer that temperature that rises due to carbon dioxide trapping the heat will not decrease, even after the carbon dioxide is gone. Frölicher, T. L., Winton, M., & Sarmiento, J. L. said that surface temperature might increase on multi-century timescales after an initial century-long decrease. From the statement Frölicher, T. L., Winton, M., & Sarmiento, J. L. said, we can support our statement that temperature that rises due to carbon dioxide trapping the heat will not decrease, even after the carbon dioxide is gone.

Our hypothesis is correct as shown in the different temperatures each set-up possess. A higher concentration of carbon dioxide will result in an increase in the temperature of the air inside the soda bottle. However, we are not able to foresee that the temperature will not be able to decrease, even after carbon dioxide has diffused.  We have a research by a University to back-up and support our conclusion of findings. Therefore, we will have to change our hypothesis to match with our conclusion.

We have found out that the carbon dioxide will escape due to diffusion (no matter the concentration). We have also realised that in the Coke itself, there will always be carbon dioxide left in it and will be released when exposed to high temperature. So in the future, we could pour out all the Coke instead of leaving some left. We are also limited to a number of set-ups we can experiment each time, therefore in future, we should construct more sample of the set-up such that more set-up can have more experiment at one time. At some point in time of our experiment, our data logger was switched off, hence losing 2 data that we are supposed to be collected. Hence, next time, we will be setting up the experiment using only individual plug and not the multiple plug type.

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