uncombined การใช้

• Only a minority of elements are found uncombined as relatively pure minerals.
• It never appears uncombined in nature and almost never stays uncombined for long.
• It never appears uncombined in nature and almost never stays uncombined for long.
• It is extremely difficult to isolate from any compounds, let alone keep uncombined.
• As a result, platinum is often found chemically uncombined as a native metal.
• A hard, rare metal under standard conditions when uncombined, tungsten is found naturally on Earth only in chemical compounds.
• Gold itself is usually found uncombined, but when found as a chemical compound, it is most often combined with tellurium.
• A hard, rare metal under standard conditions when uncombined, tungsten is found naturally on Earth almost exclusively in chemical compounds.
• Aqueous solutions of potassium bisulfate behave as two separate, uncombined compounds, K 2 SO 4 and H 2 SO 4.
• Tungsten is a hard, rare metal under standard conditions when uncombined, but is found naturally on Earth only in chemical compounds.
• Elemental boron is a metalloid that is found in small amounts in meteoroids but chemically uncombined boron is not otherwise found naturally on Earth.
• It is too reactive to be found uncombined in nature, but when isolated, is relatively stable in dry air at room temperature.
• "' Native element minerals "'are those elements that occur in nature in uncombined form with a distinct mineral structure.
• A series of uncombined initials is properly referred to as a cypher ( e . g . a royal cypher ) and is not a monogram.
• Osmium is found in nature as an uncombined element or in natural alloys; especially the iridium osmium alloys, osmiridium ( osmium rich ), and copper.
• The " uncombined fatty acids " or " free fatty acids " found in the circulation of animals come from the breakdown ( or lipolysis ) of stored triglycerides.
• For air pollution applications, the definition of " particulate " does not include uncombined water, and water from a particulate sample must be removed before it is weighed.
• Copper ( II ) hydroxide is rarely found as an uncombined mineral because it slowly reacts with carbon dioxide from the atmosphere to form a basic copper ( II ) carbonate.
• Iridium is found in nature as an uncombined element or in natural alloys; especially the iridium osmium alloys, osmiridium ( osmium-rich ), and iridosmium ( iridium-rich ).
• Although tellurium is found with gold more often than in uncombined form, it is found even more often combined as tellurides of more common metals ( e . g . melonite, NiTe 2 ).