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Transcript of Helium Prezi
state at change of temperature. It is a gas at room temperature, but can be solid OR liquid at anything below 0 Degrees Celsius.
However, Helium has some unusual properties when it is cold. It can conduct electricity and heat with almost no resistance and can even climb up the walls of its container
and escape! Helium - Is it dangerous? Helium is less dense than normal air, therefore when inhaled from a balloon (e.g.) it momentarily changes the voice of the inhaler creating a higher pitch. However, breathing in too much helium CAN be very dangerous, potentially choking people due to lack of oxygen. Atomic Number: Number of Neutrons: Number of Electrons: Symbol: Number of Protons: He 2 4.0026 2 2 2 Fact Circle Melting Point: Boiling Point: Density kg/m-3: 120 -268.93 Degrees C -272.2 Degrees C Colourless, Odourless, Tasteless Appearance: THANKS FOR WATCHING & Neutrons Protons Cost: $520 p/100g