NEW AND IMPROVED METHOD
Today, I realised how ambiguous and inaccurate my past method was...so here is my new method.
Hypothesis: Harmful ingredients such as Toluene and Formaldehyde have an impact on the durability of nail polish.
Aim: To find out the impact of harmful ingredients on the durability of nail polish.
Materials: Two nail polishes that do not contain Toulene and Formaldehyde, two nail polishes containing Toulene and Formaldehyde, Silicon Carbide abrasive paper, tape, block of wood, aluminium foil, stopwatch, q-tip, scissors, ruler
Identify | Assess | Consequences | Prevention |
Inadvertently inhaling Toluene. (Harmful to health) | Moderate risk. | Causing symptoms such as tiredness, confusion, weakness, drunken-type actions, memory loss and causing liver damage and skin irritation. In high levels, affecting the kidneys. | Carrying out experiment in a well-ventilated room while attempting to not inhale heavily. Wearing a mask. |
Inhaling formaldehyde. | Moderate risk. | Causing symptoms such as watery eyes, headache, burning in the throat, and labored breathing. | Carrying out experiment in a well-ventilated room while attempting to not inhale heavily. Wearing a mask. |
1. Tape aluminium foil onto a flat surface in room temperature (25°C)
4. Record observations and results.
5. Tape abrasive paper against a block of wood.
6. Rub the abrasive paper against the foil
8. Repeat steps 2-7 using the three other types of nail polish.
My independent variable would be the nail polish's ingredients. The dependent variable would be the duration of the nail polish applied.

