yes. think about balloons: a ballon with helium will float while a balloon with good ol' air will sink
Helium is very light. it is the second lightest element
1979
NO! Footballs are not full with helium because if they were they would float up in the sky
Helium is colorless
Helium filled light is a mixture of sodium and helium light.it is used in road lights and lightening more.
Helium is light and it will float / rise.
10-5
Hydrogen (explosive), Helium (non-explosive).
It was made out of the light gas gas Helium.
Helium, easy to header
yes
no