Tuesday, 8 March 2016

Annex B - Additional Research Data

All the research data were used in our project, proposal and report. 

                we do not have any additional research data. 

Monday, 7 March 2016

UPDATED Scientific Method

Scientific Method

Definition of A Scientific Method :
a method of procedure that has characterized natural science since the 17th century, consisting in systematic observation, measurement, and experiment, and the formulation, testing, and modification of hypotheses.TH

We think that this chart would allow us to think deeper to our ISS Project and guide us through our project. It allows us to understand what we're doing better too.  
Hence, we chose this chart.

Thank you for reading.

Yours sincerely,

Group B

Introduction of the Group Members

Hi there. Welcome to our ISS blog. We are Group B from S2-06'16. Our group consists of 3 members, Elysia Ho, Rachel Wong and Zin Mi. (from left to right).

Hope you enjoy browsing through our blog(s).

Thank you for reading.

Yours sincerely, 

Group B 

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8. Acknowledgements

We, Group B,
would firstly like to thank the teachers who helped us with this project, Mr. Teng and Mr. Tan Hoe Teck and giving us useful and helpful advice to improve on our project.
As well as seniors who gave us lend us a helping hand in this project, Sammi Lim.
We would also like to thank the lab technicians for their kind guidance and help throughout the experiment.
Without their help, I do not think we would have gone this far.
Thank you.

4. Discussion

4. Discussion

4.1 Analysis of results

We came to a conclusion that Clorox is the best cleaning agent since it killed most of the bacteria in the agar plates in our experiment. Clorox has the largest diameter of bacteria killed compared to Dettol, Mama Lemon, Life  Buoy.Although it only differs by 1-2 mm.

4.2 Key findings
We found out that our hypothesis was wrong and some of the cleaning agents that claimed that they kill 99% of bacteria are unreliable.But there might be some human errors made by us which had caused the results of be different.We may have spread some germs from our mouth as we did not use the mask to have a more accurate findings.

4.3 Explanation of key findings
All the cleaning agents used did not live up to their advertising in which it claimed to have superior cleaning qualities of removing 99.9% of germs and bacteria. Since our hypothesis revolved around Dettol, after the experiment, it is proven that Dettol obviously did not kill 99.9%. But in fact, Dettol, is actually the most trusted brand in most of the households but the result was contrary of what they state.

4.4 Evaluation of Hypothesis
Based on our experimental results, our hypothesis is wrong as from our table, it is evident that Dettol was not the agent that killed most colonies of bacteria, and instead, was the agent that killed one of the least amount of bacteria. (include percentages).Followed by Life Bouy that kills the second least of the bacteria although it claims that it kills 99.9% of bacteria.

4.5 Areas for improvement

I think that we lack of time we were not allowed to repeat the experiment I think that we should be more careful during the experiments as there might be some human error. We could have done our experiment earlier.We might have contaminated the petri dish so as to prevent that I think we should have worn a mask to have more precise results.