Examlex
Define constructive play.
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.
Acid
A substance that is a hydrogen ion (proton) donor; acids unite with bases to form salts. Compare with base.
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