“Ionizable” refers to a substance that can undergo ionization, which is the process of converting a neutral molecule into an ion by adding or removing one or more electrons. This process results in the formation of a positively charged ion (cation) or a negatively charged ion (anion), depending on whether electrons are removed or added.

Ionizable substances are often encountered in chemistry, biochemistry, and physiology, as many molecules in biological systems can undergo ionization under different conditions. For example, amino acids, which are the building blocks of proteins, are ionizable due to the presence of charged groups in their structure. This ionization can affect the properties of amino acids and proteins, such as their solubility and reactivity.

The ionization of substances can also be influenced by factors such as pH, temperature, and the presence of other ions. Understanding the ionization behavior of substances is important in many areas of science and can have practical applications in fields such as drug design and environmental chemistry.

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