Helium will change the tone of your voice. The lighter gas allows the vocal cords to vibrate at a different frequency. However, helium does not sustain life. If you breath too much of it you could pass out, or even die.
The first result of reduced oxygen to the brain is brain damage. The second result is death.
Breathing in pure helium deprives the body of oxygen, as if you were holding your breath. If you couldn't breathe at all, you'd start to die in minutes-as soon as your body exhausted the supply of oxygen stored in the blood. But helium speeds up this process: When the gas fills your lungs, it creates a diffusion gradient that washes out the oxygen. In other words, each breath of helium you take sucks more oxygen out of your system. After inhaling helium, the body's oxygen level can plummet to a hazardous level in a matter of seconds.
You don't have to worry about fatal asphyxiation if you're sucking from a helium balloon at a party. At worst you'll keep going until you get lightheaded and pass out-at which point you'll stop inhaling helium and your body's oxygen levels will return to normal. Of more concern is the possibility that you'll hurt yourself when you fall down.
Remember, the first result of reduced oxygen to the brain is brain damage. The second result is death.
Nothing, helium is inert.
The helium explodes into flames (which quickly die out).
Helium is not important for living beings.
Helium hasn't an effect.
Helium is completely inert, it is the most inert of all elements, and so it will not react in any way with hydrogen (or with any other element). So, if you mix hydrogen and helium, nothing happens. You have a mixture of hydrogen and helium. It's a lot lighter than air, you can make balloons that will float. Of course, you can do that with pure hydrogen or with pure helium, as well.
If you inhail water you get a thing called soreousenoiseouse which is my scientific term for getting a sore nose!
the ribs expand slightly to give the lungs room to expand also.
breath in and out (:
Possibly. It is certainly not advisable.
Nothing, helium is inert.
Helium is chemically inert and does not react with aluminium
Helium is not important for living beings.
The helium explodes into flames (which quickly die out).
it blows
Helium hasn't an effect.
air or oxegen
Helium doesn't combine with oxygen. Helium is chemically inert because it has completely filled valence orbitals.