Experiment - Petroleum Jelly

Hypothesis: Well known brands of Petroleum Jelly will keep the most moisture from evaporating
Aim: To determine whether well known brands of Petroleum Jelly work better than lesser known brands.
Risk Assessment:
Identify: water
Assess: may spill and create a slippery surface
Control: clean all spills immediately
Dispose: down the drain
Equipment:
- 5x shot cups
- water
- 4 different brands of Petroleum jelly
- measuring spoons
- 5 pieces of 5cm x 5cm cheesecloth
- measuring jug
- 10 rubber bands

Method:
1. Gather all equipment
2. Pour 20mL of water in each shot cup
3. Cover each shot cup with a cheesecloth and put 2 rubber bands around the top
4. Spread a quarter of a teaspoon of one brand of Petroleum Jelly evenly on the top of one cheesecloth.
5. Repeat step 4 with the 3 other brands and leave one cheesecloth plain.
6. Label the shot cups with the brand of Petroleum Jelly.
7. Leave shot cups to sit for 6 hours.
8. Record Observations.
9. Clean up experiment.
10. Repeat Experiment