polar substance

any organic substance that combines readily with water. This is due to the presence of side groups of organic molecules that contain the electrical charge of hydroxyl groups.

Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

References in periodicals archive ?

The ethanol condenser when connected to the apple showed a large and progressive rise in capacitance, as might be expected of a strongly polar substance.

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As a trained chemist and chemical engineer, I learned a long time ago that a polar substance does not mix with a non-polar substance.

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If moisture, also a polar substance, is present, you get two mini-magnets that attract each other.

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If an organic polar substance is not delivered simultaneously, water molecules begin to prevail.

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Dissolution in water, a polar substance leads to a concentration around its molecules of free water molecules.