Difference between revisions of "Bunsen Burner"
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: A [[Bunsen Burner]] has a valve at the bottom to allow in [[air]]. This valve can be turned to allow more or less [[air]] for [[combustion]]. | : A [[Bunsen Burner]] has a valve at the bottom to allow in [[air]]. This valve can be turned to allow more or less [[air]] for [[combustion]]. | ||
: If the valve on a '''Bunsen Burner''' is open it lets a lot of [[oxygen]] in so the flame may appear blue or may be difficult to see. This is a roaring flame at a high [[temperature]]. | : If the valve on a '''Bunsen Burner''' is open it lets a lot of [[oxygen]] in so the flame may appear blue or may be difficult to see. This is a roaring flame at a high [[temperature]]. | ||
| − | : If the valve on a '''Bunsen Burner''' is closed less [[oxygen]] gets in, so the flame may appear yellow. This 'safety flame' is at a lower [[temperature]]. It is safer because it can be more easily seen and is a lower [[temperature]]. | + | : If the valve on a '''Bunsen Burner''' is closed less [[oxygen]] gets in so there is [[Incomplete Combustion|incomplete combustion]], so the flame may appear yellow due to glowing particles of [[soot]]. This 'safety flame' is at a lower [[temperature]]. It is safer because it can be more easily seen and is a lower [[temperature]]. |
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Revision as of 18:34, 30 March 2019
Contents
Key Stage 3
Meaning
A picture of Bunsen Burner with a yellow flame.
A Bunsen Burner is a piece of equipment used for heating.
About Bunsen Burners
- Bunsen Burners use a flammable gas which burns to produce a flame.
- A Bunsen Burner has a valve at the bottom to allow in air. This valve can be turned to allow more or less air for combustion.
- If the valve on a Bunsen Burner is open it lets a lot of oxygen in so the flame may appear blue or may be difficult to see. This is a roaring flame at a high temperature.
- If the valve on a Bunsen Burner is closed less oxygen gets in, so the flame may appear yellow. This 'safety flame' is at a lower temperature. It is safer because it can be more easily seen and is a lower temperature.
 |
| A diagram of a Bunsen Burner. |
Key Stage 4
Meaning
A picture of Bunsen Burner with a yellow flame.
A Bunsen Burner is a piece of equipment used for heating.
About Bunsen Burners
- Bunsen Burners use a flammable gas which burns to produce a flame.
- A Bunsen Burner has a valve at the bottom to allow in air. This valve can be turned to allow more or less air for combustion.
- If the valve on a Bunsen Burner is open it lets a lot of oxygen in so the flame may appear blue or may be difficult to see. This is a roaring flame at a high temperature.
- If the valve on a Bunsen Burner is closed less oxygen gets in so there is incomplete combustion, so the flame may appear yellow due to glowing particles of soot. This 'safety flame' is at a lower temperature. It is safer because it can be more easily seen and is a lower temperature.
|
| A diagram of a Bunsen Burner. |