Quiz! Physical Science Questions!? :) 10PTS!?

idance

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Except for water, almost all of the compounds in your body contain atoms of _________.

When your breathe, what two non metals make up most of the gas that you breathe in?

Group 17 elements often combine with elements from what group? ___________.
Hint: Group 17 elements have 7 valence electrons, so they need one more electron to become stable. Which groups elements have only one valence electron?
 
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