• Question: Do you like gases?

    Asked by BossBob1234 to Chloe, Irene, Pierre, NULL, Uday on 13 Nov 2015.
    • Photo: NULL

      NULL answered on 13 Nov 2015:

      Some gases are nicer than others.

      I like breathing, so Oxygen is good. Nitrogen is an OK gas too, it does no harm.

      I don’t like Carbon Dioxide, because it causes global warming. And Methane too, and a few others.

      And some gases are just poisonous, like Fluorine, or Carbon Monoxide..

    • Photo: Chloe Huseyin

      Chloe Huseyin answered on 13 Nov 2015:

      Like Ricardo said we need oxygen to breathe!

      Our air is made up mostly of nitrogen with oxygen and then the other gases in small amounts. Oxygen makes up about 21% of the air we breathe.

      As you get higher up (like up tall mountains) there are less gas molecules present for us to breathe due to less pressure keeping the molecules tightly packed together. So you have to take some up with you or your brain wouldn’t get enough oxygen and you could become unconscious and die.

      Some gases are lighter than nitrogen and oxygen, one example is helium and that is why we use helium to make balloons float.

    • Photo: Uday Bangavadi

      Uday Bangavadi answered on 16 Nov 2015:

      Yes, I like oxygen without which I cant sustain. And Oxygen is a gas.

    • Photo: Pierre Casaubielh

      Pierre Casaubielh answered on 17 Nov 2015:

      Some gases are essential for us to breeze …

      I like producing some and sharing them with friends :DDDD … oups, sorry.

      A last one is Helium, that can change our voice when we breeze it… it is a very nice experience.

    • Photo: Irene Regan

      Irene Regan answered on 18 Nov 2015:

      Yes, I like gases but I think we need to respect them. What I mean is we need to be careful with them.
      The air we breathe contains about 21% oxygen. Without oxygen we would die in a matter of minutes.
      It may be hard to believe, but oxygen can also be dangerous. The dangers are fire and explosion.
      Oxygen behaves differently to air, compressed air, nitrogen and other inert gases. It is very reactive. Pure oxygen, at high pressure, such as from a cylinder, can react violently with common materials such as oil and grease.
      Other materials may catch fire spontaneously. Nearly all materials including textiles, rubber and even metals will burn vigorously in oxygen.

      Even a small increase in the oxygen level in the air to 24% can create a dangerous situation. It becomes easier to start a fire, which will then burn hotter and more fiercely than in normal air. It may be almost impossible to put the fire out.
      A leaking valve or hose in a poorly ventilated room or confined space can quickly increase the oxygen concentration to a dangerous level.

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