the periodic table

combine the chemical symbols for each of the following elements to spell words. carbon +argon =____.chlorine + oxygen +selenium=----+---- +----- =------ .i have 10 questions like these .please help me

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  1. I don't get it.
    Carbon is C
    Argon is Ar
    That spells CAR.
    Chlorine is Cl
    Oxygen is O
    Selenium is Se
    That spells Close.
    BUT I don't get what follows.

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  2. Is this supposed to teach students something?

    It's off topic sort of but I don't think assignments like this will teach students anything and ps spelling random words which are not related to the subject are odd in my opinion.

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