A sour substance
A substance used to show visually the condition of a solution with respect to the presence of a particular material
Agent used in the clearing and mounting of tissue slides for microscopic examination
A compound that reacts with an acid to form a salt, as ammonia, calcium hydroxide, or certain nitrogen-containing organic compounds.
The hydrogen ion bonded to a molecule of water, H3O+, the form in which hydrogen ions are found in aqueous solution.