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What is the color of the flame when hydrogen is burn?
It burns a distinct bright orange/red color which is unique to hydrogen alone.
Does pure hydrogen burn in the absence of air?
No hydrogen will not burn in the absence of air unless another oxidizer is present.
What substance do you get when you burn hydrogen?
Water.
Does hydrogen burn with a squeaky pop?
yes
How would you test a gas if it is hydrogen?
burn it?
Can a red dwarf burn hydrogen?
A red dwarf fuses hydrogen into helium, just like any star, albeit at a very conservative rate.
What is the color of the flame when hydrogen is burn?
It burns a distinct bright orange/red color which is unique to hydrogen alone.
Are main sequence stars older than red giants?
No, red giants are generally older than main sequence stars, as red giants have no hydrogen left for fuel, and burn helium instead. where as Main Sequence stars burn hydrogen for fuel.
What Stars burn hydrogen?
All stars 'burn' hydrogen
What does a red dwarf sun burn?
Like all main sequence stars, a red dwarf is powered by the fusion of hydrogen into helium.
How is helium and hydrogen used on a large scale?
helium does not burn, hydrogen will burn in air
What is a star called that has exausted its supply of oxygen?
Stars are powered by fusing hydrogen, not oxygen. A star that has exhausted the hydrogen in its core may continue to burn as a red giant.
What does it take to make hydrogen burn?
Hydrogen gas is highly flammable; you can make it burn with the slightest spark.
Can you get hydrogen back if you burn it?
Yes. When you burn hydrogen the product is water. If you pass an electric current through that water you can split it back into hydrogen and oxygen.
Does pure hydrogen burn in the absence of air?
No hydrogen will not burn in the absence of air unless another oxidizer is present.
How do you burn sea water?
You don't. Sea water is the combustion byproduct of hydrogen. That is, water is water you get when you burn hydrogen.
Why is oxygen needed to make something burn?
If you want to be really specific, you can have a flame using other things. For example, a jet of hydrogen will burn in an atmosphere of chlorine. You get hydrogen chloride then. But if you burn the hydrogen in oxygen you get water. These examples demonstrate that burning is a chemical reaction and a great many things will combine with oxygen and in many cases small particles of white/red hot material are given off. This is a flame.
