Which Cleaner Will Work Better in Bacteria Elimination When Cleaning a Dirty Surface, Chemical, or Homemade?
Human Health and Behavior
Natalia Pena
David Zumano
Roman Contreras
- Grade:
- 7
- Teacher:
- Erin Flores
Our experiment tests homemade cleaning products against chemical cleaning products to see which cleans bacteria from a dirty surface best. We are trying to see if homemade cleaning products actually work, or if they are just to make the place you clean smell good. Many families have allergies to chemicals or don’t want them in their homes, so a homemade option that doesn’t use them would really help them. Vinegar is considered a cleaning agent because of its acidity. This helps clean bacteria. Lime is also considered a cleaning agent because of its citric acid.
Good job on a very practical and well-executed experiment! Your research into the acidic properties of vinegar and lemon provided a solid scientific foundation for your study. I was impressed by your systematic use of Petri dishes to track bacteria growth over a five-day period. I noticed in your results that while the homemade cleaner started strong, the chemical cleaner was more effective at preventing growth over the long term. Your clear data tables and honest observations of the ‘fluffy mold’ growth were excellent. This is a very important discovery for families looking for cleaning alternatives. Keep up the great work
This project explores a very practical question about whether homemade or chemical cleaners are better at eliminating bacteria. I appreciate that the experiment used petri dishes and swabbing methods to actually observe bacterial growth, which shows a strong effort to collect real evidence. The comparison between the two cleaners was clear, and the results were interesting because they showed the opposite of the original hypothesis. It was also helpful that the project explained why some people prefer natural cleaners, such as avoiding chemicals or allergies. One suggestion would be to repeat the experiment with more surfaces or different types of chemical cleaners to confirm the results. Overall, this is a useful and well-thought-out experiment that connects science with everyday household decisions.
This project explores a practical question about whether homemade or chemical cleaners are more effective at eliminating bacteria. I appreciate that the experiment used petri dishes and swabbing methods to directly observe bacterial growth, showing a strong effort to collect real evidence. The comparison between the two types of cleaners was clear, and the results were interesting because they were opposite to the original hypothesis. It was also helpful that the project explained why some people prefer natural cleaners, such as avoiding harsh chemicals or preventing allergic reactions. One suggestion would be to repeat the experiment using more surfaces or different types of chemical cleaners to strengthen and confirm the results. Overall, this is a useful and thoughtful experiment that connects scientific investigation with everyday household decisions.