4.1 Key Findings & Analysis of Results
We tested the effect of 7 different types of kitchen chemicals on ink stains - Rubbing Alcohol, Toothpaste, Salt, Vinegar, Nail Polish Remover, Baking Soda, Lemon. Rubbing alcohol, nail polish remover, toothpaste and baking soda produced notable results, with baking soda producing the best amongst them. Whereas the pieces of cloth that were soaked/blotted with vinegar, salt and lemon did not have much visible signs of stain removal.
4.2 Explanation of Key Findings
The chemical we concluded had the best removal effects on ink stains was baking soda is known as sodium bicarbonate in Science, and is the composite of sodium hydrogen carbonate. It contains disinfectant properties and the ability to cut through stain particles and soften them.
4.3 Evaluation of Hypothesis
Our hypothesis at the start of the project was "certain kitchen chemicals are able to effectively remove ink stains". It was proved to be considerably accurate as at least half of the chemicals we tested were able to produce visible fading of the ink stains.
4.4 Limitations and Areas for Improvement
The pieces of cloth soaked in rubbing alcohol, nail polish remover and baking soda were seen to be more prone to smudging and causing the ink to spread to other areas of the cloth, although the ink had rather significant signs of fading. Also, if the ink dries up over time, the removal of it would harder and less likely to fade much. Some areas for improvement are that we should have planned our time wisely as we spent about 3 weeks working on the practical experiment which caused us to have not much time left in the lab to do the collection of data.