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Period 1 element

physical science Maturity 11-13

Two tiny things start the list of all stuff.

Hydrogen discharge tube.jpg
Hydrogen discharge tube.jpg
One is hydrogen. It is very light. The other is helium.
Helium discharge tube.jpg
Helium discharge tube.jpg
It helps balloons float high. These two are found all over space. Do you like floating balloons?

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🖼️ Images & Media (3)
File:Hydrogen discharge tube.jpg
Hydrogen discharge tube.jpg
File:Deuterium discharge tube.jpg
Deuterium discharge tube.jpg
File:Helium discharge tube.jpg
Helium discharge tube.jpg
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Period 2 element
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📚 Content adapted from Wikipedia | Readability: FK 14.6 | Vital Level 5