A lazy yellow flame is the "coolest" flame.
The flame color of magnesium sulfate is typically a pale white or colorless flame when it is burned. This color is due to the presence of magnesium in the compound, which burns with a relatively faint flame color compared to other metals.
Sulfur burns with a blue flame.
Potassium has a violet color in the flame test.
Sulfur burns with a blue flame when it reacts with oxygen.
Isopropanol (isopropyl alcohol) typically burns with a blue flame. The blue color is due to the chemical properties of isopropanol when it burns, which results in a clean and hot flame.
The external part of the flame is the coolest.
The color of the flame seen when sulfur burns in air is blue.
reddish purple
Strontium burns with a bright red color in a flame test.
blue
Aluminum burns with a white-silvery flame. The color of the flame can be influenced by impurities in the aluminum or the environment in which it is burned.
Potassium has a violet color in the flame test.