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Compounds that contain more than two elements but are named like binary compounds.

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Standard Molar Volume

The volume occupied by one mole of an ideal gas under standard conditions, 22.4liters.

Molality

Concentration expressed as number of moles of solute per kilogram of solvent.

Rate of Reaction

Change in the concentration of a reactant or product per unit time.

Tyndall Effect

The scattering of light by colloidal particles.

Mixture

A sample of matter composed of two or more substances, each of which retains its identity and properties.

Calorie

The amount of heat required to raise the temperature of one gram of water from 14.5°C to 15.5°C. 1 calorie = 4.184 joules.

Phosphoric Acid

H3P04, Colorless liquid or rhombic crystals, decomposes before it will boil. Used mostly in the metal etchant. Used in cleaning operations to remove encrusted surface matter and mineral scale found on metal equipment such as boilers and steam producing equipment. Also used to brighten metals and remove rust.

Nonbonding Orbital

A molecular orbital derived only from an atomic orbital of one atom, lends neither stability nor instability to a molecule or ion when populated with electrons.

Natural Radioactivity

Spontaneous decomposition of an atom.

Combustible

Classification of liquid substances that will burn on the basis of flash points. A combustible liquid means any liquid having a flash point at or above 37.8°C (100°F) but below 93.3°C (200°F), except any mixture having components with flash points of 93.3°C (200°F) or higher, the total of which makes up 99 percent or more of the total volume of the mixture.