The looks on the family faces
The looks on the family faces
No, it's a compound of the elements Silica and Oxygen... as indeed its name suggests!.
As the name suggests, they are made from combinations of chlorine, fluorine and carbon atoms.
It suggests a nocturne.
Probably hydrogen. The most common element is hydrogen. No element is in everything.
This element is a metalloid.
You would need to ensure every element of your cartoon (artwork, music, storyline, etc) is your original work, in the public domain, or properly licensed from the rightsholder.
Probably uranium is the best known radioactive element.
Your question suggests that a list will follow but there is no list. Your question, as it stands, cannot be answered.
Descriptive and sensory language
You think probably to nickel.
You think probably to magnetite.