Questions and Answers
1 is diamond a mineral? why?
2 Are minerals liquid?
3 Difference between inorganic and organic minerals
4 Is sugar a mineral? and why?
5 what is sugar made up of (Chemistry version)
6 What is bonding in minerals
7 How does the bonding determine the strength of mineral
8 physical properties of minerals
9 How is carbon and diamond different and is it different?
10 What are silicas and non silicas and minerals 1. Is a diamond a mineral? Why?
Yes, a diamond is a mineral. To be classified as a mineral, a substance must meet five criteria: it must be naturally occurring, inorganic, solid, have a definite chemical composition (pure carbon), and possess an orderly internal crystalline structure. Diamond fits all of these perfectly.
2. Are minerals liquid?
No, minerals are defined as naturally occurring solids. While the molten rock (magma or lava) that cools to form minerals is liquid, the minerals themselves only exist once that material solidifies and forms a crystalline structure. Mercury is the lone exception sometimes debated, but by strict definition, minerals are solid.
3. Difference between inorganic and organic minerals
In science, this is actually a bit of a trick question! By definition, all true minerals must be inorganic, meaning they were not formed by living organisms or made of complex hydrocarbon chains.
Inorganic: Formed by geological processes without the intervention of living organisms (e.g., quartz, salt).
"Organic minerals": This is a rare, niche classification in mineralogy for rare compounds that contain organic carbon but formed through geological processes (e.g., whewellite). However, things created directly by living things (like pearls or teeth) are called biominerals and are generally not considered true minerals.
4. Is sugar a mineral? Why?
No, sugar is not a mineral. It fails two major criteria:
It is organic (it comes from living plants like sugarcane or sugar beets).
It does not have an inorganic geological origin.
5. What is sugar made up of? (Chemistry version)
Table sugar (sucrose) is a carbohydrate with the chemical formula $\text{C}_{12}\text{H}_{22}\text{O}_{11}$.
It is a disaccharide made up of two simpler sugars chemically bonded together: glucose and fructose. It consists entirely of carbon ($\text{C}$), hydrogen ($\text{H}$), and oxygen ($\text{O}$) atoms.
6. What is bonding in minerals?
Bonding refers to how atoms hold themselves together to form a mineral's crystalline structure. The primary types of chemical bonds found in minerals are:
Ionic bonds: Atoms transfer electrons (e.g., Halite/Salt).
Covalent bonds: Atoms share electrons (e.g., Diamond).
Metallic bonds: Electrons drift freely between atoms (e.g., Native Copper).
Intermolecular (Van der Waals) bonds: Weak electrical attractions between sheets or chains (e.g., Graphite).
7. How does bonding determine the strength of a mineral?
The stronger the chemical bond, the harder and more durable the mineral:
Covalent bonds are the strongest, creating incredibly hard minerals like diamonds.
Ionic bonds are strong but brittle; they split easily along flat planes (cleavage) when struck.
Van der Waals bonds are very weak, making minerals like talc or graphite feel soft and slippery because the layers slide past each other easily.
8. Physical properties of minerals
Geologists identify minerals using these key physical properties:
Hardness: Resistance to being scratched (measured on the Mohs scale).
Luster: How light reflects off the surface (e.g., metallic, glassy, dull).
Color: The visible hue (though often unreliable due to impurities).
Streak: The color of the mineral in powdered form when scratched on a porcelain plate.
Cleavage/Fracture: How the mineral breaks (clean flat planes vs. irregular rough edges).
Crystal Habit: The natural shape the crystal grows into.
9. How are carbon and diamond different?
This is a slight misconception: diamond is carbon.
Diamond is an allotrope of carbon, meaning it is made of 100% pure carbon atoms. The difference lies entirely in how those atoms are arranged. In a diamond, the carbon atoms are locked in a rigid, three-dimensional tetrahedral network via ultra-strong covalent bonds, making it the hardest natural substance on Earth. In contrast, amorphous carbon (like charcoal or soot) has a disorganized, chaotic atomic structure.
10. What are silicates and non-silicates?
Minerals are broadly grouped based on their chemical composition:
Silicates: These are the most abundant minerals in Earth's crust. Their chemical structure is built around the silicon-oxygen tetrahedron . Examples include quartz, feldspar, and mica.
Non-Silicates: Minerals that do not contain silicon-oxygen combinations. They are grouped by other elements and include oxides (e.g., hematite), sulfides (e.g., pyrite), halides (e.g., halite/salt), and native elements (e.g., gold, diamond).