Types of flames ?

1. Blue flame: A blue flame is typically the hottest and most efficient type of flame, often seen in gas stoves and Bunsen burners.

2. Yellow flame: A yellow flame is usually cooler and less efficient than a blue flame, often seen in candles and wood-burning fires.

3. Red flame: A red flame is typically the coolest type of flame, often seen in campfires and bonfires.

4. Orange flame: An orange flame is a combination of yellow and red flames, often seen in propane torches and oil lamps.

5. Green flame: A green flame can be produced by burning certain chemicals, such as copper chloride or boron, and is often used in pyrotechnics and fireworks.

6. Purple flame: A purple flame can be produced by burning certain chemicals, such as potassium chloride or rubidium, and is also used in pyrotechnics and fireworks.

7. White flame: A white flame is a very hot and intense flame, often seen in magnesium fires or in certain types of welding.