Foaming and Fragrance Test

Foaming test

In foaming test, the soap was cut into pieces and was weighed to about 3.35 g. These pieces of soap were put into a 250 mL beaker with 50 mL of tap water.

By using magnetic stirrer, the solution was stirred with the speed of 8 in the time range of 2 minutes. The faster the foam formed in that 2 minutes, it means that the soap has a good foaming effect.

Variable to be tested: Soap

Variables to be controlled: the size of the soap, the mass of the soap, the size of the beaker, the amount of water, the speed of the stirrer.

Apparatus: 250 mL beaker, 100 mL volumetric flask, weighing balance, magnetic stirrer, scalpel

Victoria, Liyana, Airul and Dirul’s soap

This soap was the slowest one to form foam in 2 minutes.

Roz and Yas’ soaps

First soap

Second soap

Third soap

Farhan, Diana, Linna and Ai Len’s group soaps

First soap

This was the soap that has formed foam the fastest.

Second soap

All soaps formed foam within 2 minutes, which means that all of these soaps have passed the foaming test.

Conclusion: After carrying out the foaming test, all the soaps did formed foam. The best soap that formed the most foam was from Farhan’s group which was made out of pandan leaves.

Fragrance test

For the fragrance test, a small piece was cut out from the soap. It was rinsed with tap water and the small piece of soap was then rubbed with both hands under running water. After foam was formed, it was then smelled to test if the soap had a good fragrance.

Variable to be tested: Soap

Variables to be controlled: the size of the soap

Victoria, Liyana, Airul and Dirul’s soap

Result: After testing the fragrance of the soap, it was concluded that the soap gave off a bad odour. Therefore, the soap failed the fragrance test.

Roz and Yas’s group

Result: All three soap had passed the fragrance test as their soaps gave off a good fragrance. Therefore, the soaps passed the fragrance test.

Farhan, Diana, Linna and Ai Len’s group soap

Result: Both soap especially the first soap had good fragrance after carrying out the fragrance test. Therefore, their soaps passed the fragrance test.

Conclusion: After testing the fragrance of the soap, we found out that Farhan group and Roz group's soaps both had good fragrance. Unfortunately Dirul group's soap did not attain a good fragrance. This might be due to the removal of cooking oil's odour not properly removed. Hence, the soap still retained the smell of the waste cooking oil.