Potassium burns with a purple / pink flame.
Pink to crimson red.
Orange-peach color
insufficient secondary air
Rather than what the previous answer was, I believe the flame moves because of where the reaction is taking place. The combustion reaction requires oxygen as well and so where it feels an abundance of oxygen (small scale level), the reaction will follow -> which leads to the visual effect of the moving flame. Outside from that, many factors can affect motion of the flame, such as a draft from.. anything, and many more simple factors like such.
Potassium burns with a purple / pink flame.
tame flame
pink
flame game
A pink color from the spectral lines of lithium.
Pink
Pink to crimson red.
Orange-peach color
Flame luminosity occurs because of lack of oxygen. Also, the air holes in the Bunsen burner affects the flame.
insufficient secondary air
Lithium: pink to red Calcium: red as brick
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