Examlex
In the figure above, item _____ points to a semantic element.
Cation
A particle with one or more units of positive charge, such as a hydrogen ion (H+) or calcium ion (Ca2+). Compare with anion.
Anion
A particle with one or more units of negative charge, such as a chloride ion (Cl-) or hydroxide ion (OH-). Compare with cation.
Isotopes
Atoms of the same element that differ in the number of neutrons within their nuclei.
Ions
Atoms or molecules that have gained or lost one or more electrons, thus acquiring a charge.
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