Burning paraffin wax and inhaling the benzene smoke released
from burning paraffin wax can lead to nausea and vomiting as benzene is toxic.
Throughout the whole investigation the paraffin wax has
remained in the boiling tube. As the boiling tube is designed to withstand heat
so the substance will boil and not burn.
Stearic acid can cause skin irritations and it is toxic to
the body which can cause organ toxicity
Throughout the whole investigation the stearic acid has
remained in the boiling tube. So, it did not involve touching any exposed skin.
Hotplates that were switched on can cause damaged to the skin
such as skin burns. As it was set at a temperature to boil water which could
have been possibly greater than 100°C. Which can cause severe damage to
There were warning signs informing people that the hotplates
were switched on and very hot. That was placed at every station where the
hotplates were. This would decrease any risks of skin burns as the people
around the area is informed that the hotplates were on.
Water baths that were switched on can cause damaged to the
skin such as skin burns. As it was set at a temperature above the melting
points of both stearic acid and paraffin wax. Which can cause severe damage to
There were boiling tube racks within the water bath this
would allow the person to place the boiling tubes into the water bath. Without
every touching the hot water inside the water bath this would decrease any
risks of skin burns.
Dropping boiling tubes on to the ground can result in shard
of glass on the ground risking everyone in the area from harm.
The boiling tubes were placed into boiling tube rack, so
people would not have to record the temperature while holding the boiling tube.
This will allow the person to focus on measuring the temperature of the
substance. While reducing the risk of dropping the boiling tubes onto the