Question

Несколько вопросов по химии.......ㅤ40 балловㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ ㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤㅤ В каких соединениях металлы находятся в природе? Что такое самородные металлы? Приведите примеры металлов, которые встречаются в самородном виде и только в соединениях.

Answer 1

Ответ:

Нахождение в природе

Бо́льшая часть металлов присутствует в природе в виде руд и соединений. Они образуют оксиды, сульфиды, карбонаты и другие химические соединения.К самородным металлам относят класс металлов, являющихся по своему составу простыми, то есть не находящиеся в соединениях.

В самородном состоянии встречаются платина, серебро, золото, медь, ртуть и некоторые другие виды металлов.

Только в соединениях встречаются щелочноземельные виды металлов.

Answer 2

Metals in Nature and Native Metals

Metals are naturally occurring elements that are typically solid, shiny, and good conductors of heat and electricity. They are found in various forms in nature, including as native metals and in compounds.

Native metals are metals that are found in their pure, uncombined form in nature. They are relatively rare and occur in small quantities. Some examples of native metals include gold (Au), silver (Ag), and copper (Cu). These metals have been used by humans for thousands of years due to their desirable properties, such as malleability, ductility, and conductivity.

Metals in Compounds

Most metals are found in nature as compounds rather than in their pure form. They combine with other elements to form minerals or ores. Some common examples of metal compounds include oxides, sulfides, carbonates, and silicates.

Metal oxides are compounds formed when metals react with oxygen. They are abundant in nature and can be found in minerals such as hematite (Fe2O3), magnetite (Fe3O4), and aluminum oxide (Al2O3).

Metal sulfides are compounds formed when metals react with sulfur. They are also commonly found in nature and can be found in minerals such as galena (PbS), pyrite (FeS2), and sphalerite (ZnS).

Metal carbonates are compounds formed when metals react with carbon dioxide and carbonate ions. Some examples of metal carbonates include calcite (CaCO3) and dolomite (CaMg(CO3)2).

Metal silicates are compounds formed when metals react with silicon and oxygen. They are abundant in the Earth's crust and can be found in minerals such as feldspar and mica.

Examples of Metals in Nature and Compounds

Here are some examples of metals that are found in their native form and in compounds:

1. Gold (Au): Gold is a metal that is found both in its native form and in compounds. It is often found as nuggets or grains in rivers and streams, making it one of the most well-known native metals. Gold is also found in compounds such as gold ores, which are typically a combination of gold and other elements like sulfur or quartz.

2. Copper (Cu): Copper is another metal that is found in both its native form and in compounds. Native copper can be found in certain geological formations, but it is relatively rare. Copper is more commonly found in compounds such as copper sulfides (e.g., chalcopyrite) and copper oxides (e.g., cuprite).

3. Silver (Ag): Silver is primarily found in its native form as well as in compounds. Native silver can be found in various geological formations, often in combination with other metals like copper, lead, or gold. Silver is also found in compounds such as silver sulfides (e.g., argentite) and silver halides (e.g., chlorargyrite).

These are just a few examples of metals that can be found in their native form or in compounds in nature. The occurrence of metals in nature depends on various geological processes and conditions.

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