Colorado Esthetician Written Practice Exam 2026 – Complete Test Prep

Question: 1 / 400

What is an ion?

An atom without electrons

An atom or molecule with a neutral charge

An atom or molecule that carries an electrical charge

An ion is an atom or molecule that carries an electrical charge. This charge can be positive or negative, depending on whether the ion has gained or lost electrons. In the case of ions, they are not neutral like option B suggests; they have an imbalance of electrons which results in the electrical charge mentioned in option C.

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A molecule with a balanced charge

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