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Questions and Answers
What is the main difference between minerals and ores?
What is the main difference between minerals and ores?
- Ores are rocks made of minerals, while minerals are pure metal compounds.
- Minerals can be obtained by mining, while ores are formed through natural processes.
- Minerals contain a high proportion of metal, while ores do not.
- Ores are found in nature in their pure form, while minerals are always in compound form. (correct)
Why are only a few metals found in nature in their free state?
Why are only a few metals found in nature in their free state?
- Metals are easily extracted from their compounds.
- Most metals react with air and water, forming compounds. (correct)
- Natural resources do not contain metals.
- Metals are too heavy to be present in their pure form.
What is the purpose of extracting impurities like 'gangue' from ores?
What is the purpose of extracting impurities like 'gangue' from ores?
- To reduce the weight of the extracted metal.
- To increase the value of the ore. (correct)
- To prevent ore degradation.
- To make the ore more visually appealing.
Why do most metals need to be extracted from ores and not found in their pure form?
Why do most metals need to be extracted from ores and not found in their pure form?
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What distinguishes a 'metal mineral' from a 'non-metal mineral'?
What distinguishes a 'metal mineral' from a 'non-metal mineral'?
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'Gangue' refers to:
'Gangue' refers to:
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Study Notes
Mineral vs Ore
- Minerals are naturally occurring inorganic solids with a specific chemical composition and a crystalline structure.
- Ores are naturally occurring mineral deposits from which a valuable substance, usually metal, can be extracted at a profit.
Metals in Nature
- Only a few metals, such as gold, silver, and copper, are found in nature in their free state because most metals react with their surroundings, forming compounds.
Purification of Ores
- The purpose of extracting impurities like 'gangue' from ores is to separate the valuable minerals from the worthless rocks and other minerals.
- Gangue refers to the commercially worthless minerals that accompany the valuable minerals in an ore.
Metal Extraction
- Most metals need to be extracted from ores because they do not exist in their pure form in nature due to their reactivity.
Metal and Non-Metal Minerals
- A 'metal mineral' is a mineral that contains a metal, such as iron, copper, or gold, and can be used as a source of that metal.
- A 'non-metal mineral' is a mineral that does not contain a metal, such as quartz or calcium carbonate.
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Description
Test your knowledge on natural resources, including what they are, examples, the lithosphere, minerals, ores, metal minerals, non-metal minerals, and mining of metals. Explore the importance of various substances derived from nature and how they fulfill our daily needs.
