SIP Appendix

Day 1

3pm:

Plastic beakers A, B, C and D each filled with 250ml of tap water.

Paracetamol tablets are crushed respectively and poured into the beakers. As you can see, the water from beakers A to D are increasingly cloudy as a higher dosage of crushed paracetamol was poured in.

The roses are cut from the same bush and are cut at equal length to ensure fairness of the experiment. They are then placed into the beakers and observed at different times of the day: 3pm in the afternoon and 9pm at night.

9pm: 

Just 6 hours after setting up the apparatus, the roses in beakers B, C and D are already showing signs of wilting. Meanwhile, the rose in beaker A (the control experiment) still looks fresh and new.

Day 2

3pm:

The first petal drops off of the rose in beaker D, which has already wilted and turned brownish in colour. The roses in B and C are still showing signs of wilting.

The rose in A has not shown signs of wilting yet, but is starting to droop.

9pm:

Not much change observed. As you can see, the roses in B, C and D look much more wilted compared to the rose in A.

Day 3

3pm:

By the next day, the rose in beaker C has a petal sticking outwards. Soon afterwards, it drops off. 

9pm:

Three petals fell off the rose in beaker B. 

Upon both touch and sight, the petals of the rose in A have a smoother texture as compared to the roses in B, C and D, which feel rougher and more paper-like. This shows that they dried up more quickly compared to the rose in A, which was not provided with any dosage of paracetamol in its water.