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Bunsen Burner Lab!!!!, Exams of Basic Electronics

Stanford UniversityBasic Electronics

In this lab you will learn how to light and adjust a burner flame and to locate the hottest part of the flame. Materials: Spark lighter. Bunsen Burner support ...

Typology: Exams

2022/2023

Uploaded on 03/01/2023

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ahalya 🇺🇸

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bg1
Name____________________________________&
&
Bunsen&Burner&Lab!!!!&
&
Background: Often a chemist needs to heat materials. The Bunsen Burner is one of the most efficient ways of
doing this. Burners come in a variety of designs but most operate on the principle of mixing gas with air to
produce a hot flame. In this lab you will learn how to light and adjust a burner flame and to locate the hottest
part of the flame.
Materials:
Spark lighter
Bunsen Burner
support stand w/ ring wire
screen
gloves
250 mL beaker
100mL graduated cylinder
metal thermometer
Part 1: Parts of a Bunsen Burner!
1. Sketch one of the Bunsen burners from the lab. (In the space Below)
2. Identify and label its parts using the guide sheet!
3. Give the purpose of each part of the Bunsen Burner!
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Name____________________________________

Bunsen Burner Lab!!!!

Background : Often a chemist needs to heat materials. The Bunsen Burner is one of the most efficient ways of doing this. Burners come in a variety of designs but most operate on the principle of mixing gas with air to produce a hot flame. In this lab you will learn how to light and adjust a burner flame and to locate the hottest part of the flame. Materials : Spark lighter Bunsen Burner support stand w/ ring wire screen gloves 250 mL beaker 100mL graduated cylinder metal thermometer Part 1: Parts of a Bunsen Burner!

  1. Sketch one of the Bunsen burners from the lab. (In the space Below)
  2. Identify and label its parts using the guide sheet!
  3. Give the purpose of each part of the Bunsen Burner!

Part 2: Setting Up a Bunsen Burner! WAIT FOR HELP FROM A BEFORE STEP 4!!!!!!!!! Procedure:

  1. Connect the hose to the table outlet. Clear the area of all flammable objects (including clothing & your hair!)
  2. Turn the barrel so that the air intake openings are closed, and then open them three full turns.
  3. Close the gas flow valve at the bottom of the burner, and then open it three full turns.
  4. Put on your goggles, Call over a teacher to: open the gas valve on the table and light the burner.
  5. Adjust the barrel so that the flame is pale blue with a dark blue inner cone. Part 3: What is the Hottest Part of the Flame? Procedure:
  6. Set up the support stand, ring, and wire screen as shown in the photos (see below).
  7. Position the ring clamp so that the beaker is at the position assigned to your group.
  8. Put 100mL of water into the beaker and record the starting temperature of the water on your data sheet.
  9. Heat the water and record temperature every 1 min.
  10. Continue this until the water Boils (100 degrees Celsius). Write down the amount of time it took to boil!
  11. Write data on board and Obtain data from all groups, make sure you have data from all heights.

Parts of the Flame!

2 cm 4 cm 6cm 8cm

Chemical Reaction occurring in the flame: C 3 H 8 + 5 O 2 -­‐-­‐-­‐  3 CO 2 + 4 H 2 O

  1. What parts of the Bunsen burner allow air to be mixed in with the gas? Why do the gas and air need to be mixed (hint look at the reaction at the bottom of page 2)
  2. What sources of Error may have occurred during this lab? Find two examples and explain how your results may have been affected.

Parts of the Bunsen Burner Guide!!!

A. Barrel - Where gas and air are mixed

B. Collar - Adjust the air intake

C. Air intake openings - Air enters here

D. Gas Flow Valve - Regulates flow of gas (can also be controlled from

table gas valve)

E. Gas intake tube – Gas enters burner from table source.

F. Base - Supports burner