Elemental, as in "elemental copper" as opposed to copper ore. It's POSSIBLE that the word you're looking for might be "noble" though some metals that are not noble metals can occasionally be found in elemental form: iron meteorites, for example.
Examples of minerals that occur as elements instead of compounds are:
Gold, Silver, Copper, Diamond.
Probably in ionic compounds where they act as anions. I don't think OBr2 will exist everywhere at all.
Yes
Silicon is the eighth most abundant element (by weight) in the universe, and the second most abundant element in the earth's crust. It does not occur in its pure form but around 90% of the earth's crust is made up of compounds of silicon (silicates).
No, while some organic compounds can form hydrogen bonds, these bonds are not inherently organic. Hydrogen bonds occur where hydrogen is bonded to a highly electronegative element such as oxygen or nitrogen. Organic compounds must contain carbon, which is not related to hydrogen bonding.
Minerals are thrown together
Copper, Silver, and Gold occur as elements instead of compounds.
Copper, Silver, and Gold occur as elements instead of compounds.
Copper, Silver, and Gold occur as elements instead of compounds.
Copper, Silver, and Gold occur as elements instead of compounds.
Copper, silver, and gold.
Many organic compounds are insoluble in water. They have carbon and hydrogen as elements.
They can be either. Gold and carbon are both elements that occur as minerals in element form. Carbon in fact takes two mineral forms: graphite and diamond. Most minerals are compounds. Some of the simpler ones include silicon dioxide (quartz), aluminum oxide (corundum), and sodium chloride (halite).
Sulfur does not occur in elemental form in the human body. Instead, sulfur is present in various compounds, which are primarily in solid or dissolved state.
Germanium is a naturally occurring element, but does not occur in pure form on the Earth (only in compounds).
Probably in ionic compounds where they act as anions. I don't think OBr2 will exist everywhere at all.
Compounds, or minerals. The most common is the sodium chloride found in sea water. They are too reactive to be found as free elements.
Rare minerals are those that occur only in select locations or in limited quantity in comparison to other minerals.