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- Romeo
- To report: 3
- Connected:Man 24 april 2006 21:12
How do I burn metal?
AlreadydoorRomeo»
please help me, i need to know how to burn copper, lead and iron. I tried it in solid form but it didn't work. My project is that we can identify different metals by the color of the flame. Please help
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- FilipPierce
- Former expert
- To report: 59
- Connected:Sun August 21, 2005 at 6:08 PM
AlreadydoorFilipPierce»
Hello Romeo,
Can you tell me what you tried to burn the metals with? You should also be very careful when burning them as some metals give off toxic fumes and can be harmful.
Succes,
Philip
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- Romeo
- To report: 3
- Connected:Man 24 april 2006 21:12
AlreadydoorRomeo»
Hi Philip,
I tried burning with the torch, and I also tried with candles, which obviously didn't work. any suggestion, please reply.
So,
R
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- FilipPierce
- Former expert
- To report: 59
- Connected:Sun August 21, 2005 at 6:08 PM
AlreadydoorFilipPierce»
Hello Romeo,
I would recommend using a Bunsen burner to melt your metals. The candle and torch (not a welding torch) are not hot enough to melt the metals because the gas and air mixture is not good.
With a Bunsen burner you can change the gas and oxygen mixed together to make it hotter. If you set it right, all you will see is a blue flame, which is very hot and will melt your metals. However, you need to be more careful when working with a Bunsen burner. You can ask your teacher if you can use one.
Before working with lead, which I do not recommend, you should also make sure you understand the safety precautions as it can be dangerous.
Please let us know how it goes.
Philip
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- hhemken
- Former expert
- To report: 266
- Connected:Man October 3, 2005 3:16 PM
oxidizing versus reducing
Alreadydoorhhemken»
I'm guessing it's not the blue part of the flame you're looking for. While it is hot, it is a "reducing" flame, which is the opposite of oxidizing (you should research this). The yellow part of the flame will oxidize the metal and perhaps show the emission spectra you are looking for.
Try placing small pieces of metal on a stone or concrete surface (be sure!) and try burning with different parts of the flame from a blowtorch or gas Bunsen burner as suggested above.
And yes, the visible color of the metal's emission spectrum is different for different metals. Metal salts produce fireworks in different colors.
Also, the metal may not need to be in its metallic form. You may want to try some common salts of the metals and see if it is easier to obtain the spectra.
WARNING! this can create toxic fumes and risks the flame blowing hot debris into inappropriate locations. Do this in a working fume hood with the fan on, or in a very well-ventilated area where you cannot inhale the fumes produced during the process or come into contact with hot waste.
Heinz Hemken
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