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Blue. One way to think of it is to consider visible light. Light with short wavelength has high energy (as you move towards purple from red). So for a flame to be producing a certain colour it needs the energy to create this colour. As blue is closer to purple that green is in the visible spectrum, then the flame must have more energy which must mean the flame is hotter.
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Why is the blue roaring flame hotter?
actually, the hottest part of a fire IS the blue-green part!
Is green fire hotter then blue fire?
Assuming we're not throwing ions into the flame and the color is due strictly to temperature, the blue flame is hotter.The problem is that flames can be different colors for reasons other than temperature. Specifically, they may contain ionized materials with strong emission lines that color the flame. Probably the easiest example to observe using ordinary household materials is sodium which gives an orangish yellow color (easily seen by dropping a few crystals of table salt into the flame of a gas stove).The reason that hotter flames are blue is that blue light is more energetic than red light. A hotter flame has more energy, and therefore generates more energetic light.
Is a yellow flame of a Bunsen burner hotter than the blue flame?
No, a yellow flame is colder than a blue flame.
What are the two types of flame?
Blue Flame=Can't see (hotter then yellow flame) Yellow Flame (safety flame)=visible
When using a Bunsen burner why do you use the blue flame for heating?
The blue flame is hotter then the orange one. Plus the temperature of the flame is not constant in a orange flame but it is more constant in a blue one.
Why is the blue roaring flame hotter?
actually, the hottest part of a fire IS the blue-green part!
What is more powerful a red flame or a blue flame?
blue flames are hotter
Is green fire hotter then blue fire?
Assuming we're not throwing ions into the flame and the color is due strictly to temperature, the blue flame is hotter.The problem is that flames can be different colors for reasons other than temperature. Specifically, they may contain ionized materials with strong emission lines that color the flame. Probably the easiest example to observe using ordinary household materials is sodium which gives an orangish yellow color (easily seen by dropping a few crystals of table salt into the flame of a gas stove).The reason that hotter flames are blue is that blue light is more energetic than red light. A hotter flame has more energy, and therefore generates more energetic light.
Is a yellow flame of a Bunsen burner hotter than the blue flame?
No, a yellow flame is colder than a blue flame.
What part of a flame burns hotter?
The blue portion of a flame is the hottest
Is the blue flame hotter then then the yellow flame?
Yes it is. Because it gets more oxygen do therefore its hotter. It burns the air up and becomes blue.
Why does water get hotter when being boiled by a blue Bunsen burner flame?
If you see blue it means that the flame is hotter. It will then (obviously) heat up whatever it is faster.
Is the blue flame hotter than yellow flames?
A blue flame is hotter than a yellow flame because a blue flame has more oxygen, so it has more energy to create extra heat. Therefore, a blue flame is more dangerous and a yellow flame is used in laboratories. The hottest part of the blue flame is right under the middle, this part is called the crown !!
What are the two types of flame?
Blue Flame=Can't see (hotter then yellow flame) Yellow Flame (safety flame)=visible
When using a Bunsen burner why do you use the blue flame for heating?
The blue flame is hotter then the orange one. Plus the temperature of the flame is not constant in a orange flame but it is more constant in a blue one.
Is a flame red flame hotter than a yellow flame?
No, yellow is hotter. The progression, from least hot to hottest, goes: black-red, dark red, bright red, light red, orange, yellow, blue, white-yellow, white.
Why is the blue flame on the Bunsen burner used for heating?
It's hotter than the yellow flame.
