Lab Report Bunsen Burner Position A

The purpose of this lab experiment was to test which area of three designated areas in a Bunsen Burner flame would have the highest temperature. The first position was the tip of the blue outer flame, the second position being the tip of the inner cone, and the last position being half way down the inner flame. Through the courses of the experiment, data collected showed that Position A was the hottest of the three. The highest average temperature of the flame in effects to a beaker of water was 36.0°C as compared to 34.9°C and 30.8°C. Based on the data, it is concluded that Position A is the hottest. However, this conclusion may be incorrect because of invalid or bad data collecting and sharing. Groups may have not collected data for positions
with the wrong setup.

INTRODUCTION
During a lab the Bunsen Burner is a common source of heat and open flame.
This piece of lab equipment is composed of a collar, barrel, gas intake tube, base, air intake openings, and a gas flow valve. A proper Bunsen Burner flame requires the right amount of steadily flowing natural gas and along with the proper amount of oxygen. Once a flame is properly prepared it can be used for heating, sterilization, and combustion.CITE The flame is composed of an inner and outer cone. The inner cone has a strong blue color and the outer has a lighter blue. The colors indicate that the different areas of the flame are not of the same temperature. The purpose of the experiment conducted was to test which area of the flame, A, B, or C, is hottest. Each position was corresponding to heights in the flame, A at the top of the outer cone, B at the tip of the inner cone, and C at the middle of the inner cone. Pairs of students were assigned different positions and recording the temperature of a beaker of water under their flame. The hypothesis for this experiment was that temperatures taken at point C of the flame would be hotter than temperatures at point A/B because C is closest to the area of
combustion.

MATERIALS AND METHODS
To start this lab, the first step was for all students to put on their goggles for safety.
The materials used were a burner, striker, 250 mL beaker, 100 mL graduated cylinder, glass stirring rod, thermometer, ring stand, ring, wire gauze, and beaker tongs.The bunsen burner was lit with a striker and gas and oxygen levels were altered until a proper flame was created. The original flame was large and yellow but it is not used during experiments because it is inefficient and dirty due to there being an incomplete combustion so soot is produced. Position A was created by twisting the air intake port by turning it counterclockwise which made the flame turn blue. To decrease its size even more they had to turn the gas flow valve clockwise to decrease the amount of gas. To reach position B the amount of gas had to be decreased while position C groups had to decrease the amount of gas (but not so that the flame went out). Then they set up the ring stand so that the ring was set up high enough for the Bunsen burner to fit beneath it. The wire gauze was then placed on top of the ring. Then 100 mL of water was poured water into the beaker which was then placed on top of the wire gauze. Afterwards, the water was stirred for a bit using the stirring rod, and then the thermometer was placed in between the thermometer clamp so that the bottom of the thermometer was placed inside the beaker filled with 100 mL of water, and it was made sure that the thermometer was not touching any part of
the beaker either. The students started to record the temperature in Celsius every 15 seconds for 120 second. Once each of the positions was tested findings were shared with other groupmates. After this, it was determined if hypotheses were correct or not, and results were recorded into a data table and a line graph.