Chemistry

Articles about matter, substances, reactions and chemical science.

Articles in this category: 1474 Updated: April 29, 2026 Page 15 / 31

Hydron

Hydron: the hydrogen ion and its isotopic forms

Hydroselenide

Hydroxide

Hydroxide (OH−): properties, reactions, minerals and industrial uses

Hypobromite

Hypobromite

Hypobromite: chemistry, preparation, uses and biological role

Hypobromite (BrO⁻) is the bromine oxyanion in oxidation state +1; an oxidizer used in disinfection and produced biologically. This entry covers its properties, preparation, uses, a

Hypobromous acid

Hypochlorite

Hypochlorous acid

Hypoiodite

Hypoiodite (IO−): properties, preparation and reactivity

Hypoiodous acid

Hypoiodous acid (HIO)

Hypomanganate

Hypophosphite

Hypophosphorous acid

Ice

Ignition

Impurity

Indium

Indium — properties, occurrence, uses, and history

Inductively coupled plasma mass spectrometry

Inductively Coupled Plasma Mass Spectrometry (ICP-MS)

Inert gas

Inert gas: properties, types, history, and common uses

Infrared spectroscopy

Infusion

Inner transition metal

Inner transition metals (lanthanides and actinides)

Inorganic

Inorganic (chemistry and materials)

Inorganic chemistry

Inorganic chemistry: principles, scope, history and applications

Inorganic compound

Insecticide

Insecticide: Types, Uses, Environmental Effects and Safety

Interhalogen

Interhalogen compounds

International Union of Pure and Applied Chemistry

International Union of Pure and Applied Chemistry (IUPAC)

Intoxication

Invisible ink

Invisible Ink: History, Methods, and Uses

Iodate

Iodate (IO3−): chemistry, structure, reactions and uses

Iodic acid

Iodide

Iodine

Iodine (chemical element)

Iodine heptafluoride

Iodine monochloride

Iodine pentafluoride

Iodine pentoxide

Iodine Pentoxide (I2O5): Structure, Properties, and Chemical Behavior

Iodine trichloride

Iodine trifluoride

Ion

Ion

Ionic bond

Ionic compound

Ionization

Ionization energy

Ionization energy: definition, periodic trends, causes and significance

Iridium

Iridium (element 77)

Iron

Iron (Fe, atomic number 26): properties, occurrence, and uses

Iron chloride

Iron oxide

Iron oxides: types, properties, occurrence, uses and cultural significance