TEAS Science · Practice Question

    Stoichiometry: TEAS Practice Question with Answer & Explanation

    An original TEAS 7-style science practice question, written for nursing-school applicants — with a full breakdown of every answer choice.

    Question

    In a balanced chemical equation, coefficients primarily represent what?

    • A.Atomic masses
    • B.Relative numbers of particles or moles
      Correct
    • C.Reaction temperatures
    • D.Electron charges

    Correct answer: B. Coefficients show the relative mole or particle ratios in which reactants combine and products form.

    Why B is correct

    Coefficients show the relative mole or particle ratios in which reactants combine and products form.

    TEAS skill review

    This question tests stoichiometry, a concept that can appear in the TEAS science section. Read the prompt carefully, identify the rule or evidence being tested, and eliminate options that do not directly satisfy it.

    Why the other choices are incorrect

    The remaining choices conflict with the relevant fact, calculation, language convention, or passage evidence. Check every option against the exact wording of the question rather than choosing an answer that is only generally related to the topic.

    Quick study tip: Use coefficients—not subscripts—for mole ratios.

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