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==Key Stage 3==
===Meaning===
[[File:BunsenBurner.png|right|300px|thumb|A picture of [[Bunsen Burner]] with a yellow flame.]]
A [[Bunsen Burner]] is a piece of [[equipment]] used for [[heating]].
===About Bunsen Burners===
: [[Bunsen Burner]]s 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]].
{| class="wikitable"
|-
|[[File:BunsenBurnerDiagram.png|center|300px]]
|-
| style="height:20px; width:200px; text-align:center;" |A [[diagram]] of a [[Bunsen Burner]].
|}
==Key Stage 4==
===Meaning===
[[File:BunsenBurner.png|right|300px|thumb|A picture of [[Bunsen Burner]] with a yellow flame.]]