Ores

Metals are found everywhere. They can be found in homes, appliances, cars, bridges, airplanes, and skyscrapers. The outer elements of most metal atoms tend to be held weakly to the atomic nucleus. These outer electrons can be easily dislodged, leaving behind positively charged metal ions. Mobility if electrons in metal accounts for the ability to conduct electricity and heat. Metals are shiny because free electrons easily vibrate to the oscillations for any light filling on them, reflecting most of it. Two or more metals can be bonded to each other by metallic bonds. A **metallic bond** is "fluid" of electrons that have positively charged metal ions. **Alloy** is any mixture composed of two or more metallic elements. Only a few metals appear in metallic form. Deposits of natural metals are known as native metals. They are quite rare. Metals found in nature are known as chemical compounds.

Ores are geologic deposits containing relatively high concentrations of metal-containing compounds. Ores are only found in the ground. Although metal-containing compounds occur everywhere, only ores are concentrated enough to extract medals economically feasible.

Metal ions only bond with 5 types of negatively charged ions. Halides are commonly referred to as salt. Compounds carbonate, phosphate, oxide, or sulfide tend to not be water soluble. Metals in group one tend to be halides. Group two are carbonates. Group three are phosphates. Group our through eight along with aluminum and tin tend to be oxides. Group nine through fifteen along with molybdenum are sulfides.

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