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Combination of symbols that indicates the chemical composition of a substance.

 

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Interesting facts about metals

Metals have been used by people since ancient times. All the time the process of obtaining them was improved, useful alloys of various metals appeared. Let’s look at interesting facts about metals.

Natural Radioactivity

Spontaneous decomposition of an atom.

Gangue

Sand, rock, and other impurities surrounding the mineral of interest in an ore.

Stoichiometry

Description of the quantitative relationships among elements and compounds as they undergo chemical changes.

xenon trioxide

A colorless, nonvolatile solid, XeO3, explosive when dry: in solution it is called xenic acid.

Periodic Table

An arrangement of elements in order of increasing atomic numbers that also emphasizes periodicity.

Bomb Calorimeter

A device used to measure the heat transfer between system and surroundings at constant volume.

Electron Affinity

The amount of energy absorbed in the process in which an electron is added to a neutral isolated gaseous atom to form a gaseous ion with a 1- charge, has a negative value if energy is released.

Flux

A substance added to react with the charge, or a product of its reduction, in metallurgy, usually added to lower a melting point.

Octet Rule

Many representative elements attain at least a share of eight electrons in their valence shells when they form molecular or ionic compounds, there are some limitations.