Strontium nitrate will turn a flame red
The flame test for strontium - a strong red color.
red / crimson
Strontium nitrate emits a bright red flame when it is burned.
A better question would be "which elements burn red", as more than one element burns red. Lithium chloride burns red, calcium chloride burnds a red-orange, and strontium chloride burns bright red.
Strontium will produce different colours dependant on the circumstances. If the flame has oxygen and hydrogen present, the flame will be red. With chlorine in the flame it will be a brighter red. If it is the strontium atoms excited by themselves they produce a violet colour.
strong red (crimson)
A lazy yellow flame is the "coolest" flame.
The metals burns with a red flame and a white solid is formed.
it burns white, but when mixed with potasium nirtate, it burns purple/violet
Usually, it's strontium (Sr, #38). It burns a bright red as it oxidizes. This distinctive color is also evident during flame tests of strontium solutions.
Its not a Blue Flame (blue flame)its a white flame. i believe it can get around 1,000degrees