Carbon and Its Allotropes

<p>Reactivity (C)</p> Signup and view all the answers

<p>Used to make explosives (B)</p> Signup and view all the answers

<p>Na₂CO₃ + H₂O + CO₂ → 2NaHCO₃ (B)</p> Signup and view all the answers

<p>Acidity (B)</p> Signup and view all the answers

<p>CO₂ (C)</p> Signup and view all the answers

<p>Upward displacement of air (B)</p> Signup and view all the answers

<p>Acidity (B)</p> Signup and view all the answers

<p>Coke can react with metal oxides to remove oxygen and form carbon dioxide. (A)</p> Signup and view all the answers

<p>Saturated hydrocarbons contain only single bonds between carbon atoms, while unsaturated hydrocarbons have at least one double or triple bond. (A)</p> Signup and view all the answers

<p>Ethane (CH₃—CH₃) (A), Propane (CH₃—CH₂—CH₃) (B)</p> Signup and view all the answers

<p>4 (A)</p> Signup and view all the answers

<p>Methane (CH₄) (B)</p> Signup and view all the answers

<p>Purification of water and organic material. (C)</p> Signup and view all the answers

<p>The equal sharing of electrons between the two carbon atoms. (B)</p> Signup and view all the answers

<p>Production of synthetic diamonds. (E)</p> Signup and view all the answers

<p>Covalent bond (A)</p> Signup and view all the answers

<p>2NaHCO3 + H₂SO₄ → Na₂SO₄ + 2 H2O + 2 CO₂↑ (C)</p> Signup and view all the answers

<p>They do not cause corrosion and are non-conductors of electricity. (B)</p> Signup and view all the answers

<p>Methane has a boiling point of -161.5 °C. (B)</p> Signup and view all the answers

<p>Methyl chloride and hydrogen chloride (B)</p> Signup and view all the answers

<p>At 300 °C in the presence of a nickel catalyst (D)</p> Signup and view all the answers

<p>Fullerene (B)</p> Signup and view all the answers

<p>Anthracite (C)</p> Signup and view all the answers

<p>Buckytube (B)</p> Signup and view all the answers

<p>They have a very high melting point. (C)</p> Signup and view all the answers

<p>C90 (B)</p> Signup and view all the answers

<p>Formation of Peat (C)</p> Signup and view all the answers

<p>Fullerene (C)</p> Signup and view all the answers

<p>Carbon atoms are arranged in layers that can slide over each other. (A)</p> Signup and view all the answers

<p>Their structural arrangement. (B)</p> Signup and view all the answers

<p>Carbon (A)</p> Signup and view all the answers

<p>Water (A)</p> Signup and view all the answers

<p>Carbo (B)</p> Signup and view all the answers

<p>Diamond (A)</p> Signup and view all the answers

<p>The presence of carbon (C)</p> Signup and view all the answers

<p>$NH_4^+CNO \xrightarrow{Heat} NH_2CONH_2$ (A)</p> Signup and view all the answers

<p>Carbon forms strong bonds with itself and other elements, leading to a vast diversity of compounds. (D)</p> Signup and view all the answers

A basic substance that cannot be broken down into simpler substances.

A non-metallic element essential in organic compounds, present in free and combined forms.

Compounds that contain carbon, derived from living organisms.

Compounds not derived from living organisms, typically do not contain carbon.

Different structural forms of carbon that have distinct properties, like graphite and diamond.

The process of creating an organic compound from inorganic materials, pioneered by Wohler with ammonium cyanate.

Burning of a substance in oxygen producing carbon dioxide and water, leaving ash or residues.

Coal is used as fuel, for coke production, and in electricity generation.

Charcoal is formed by burning wood with limited air supply.

Coke is pure coal remaining after coal gas is extracted.

Coke is used as fuel and reducing agent, also in gas production.

Compounds consisting solely of carbon and hydrogen.

Carbon has a valency of 4, forming four covalent bonds.

Hydrocarbons with only single bonds between carbon atoms.

Hydrocarbons containing at least one multiple bond between carbon atoms.

A covalent bond is formed by sharing electrons between atoms.

Methane's structural formula is CH₄, showing four covalent C-H bonds.

Fire extinguishers using carbon dioxide to put out fires, especially on electrical equipment.

The reaction between sulphuric acid and sodium bicarbonate releasing carbon dioxide during fire extinguishing.

A colorless, highly flammable gas with a melting point of -182.5 °C and boiling point of -161.5 °C.

The reaction of methane with oxygen producing carbon dioxide, water, and heat, releasing 213 kcal/mol.

The reaction of methane with chlorine to produce methyl chloride and hydrogen chloride, occurs with UV light.

The reaction produces CaCl₂, H₂O, and CO₂.

CO₂ is colorless, odorless, and denser than air.

CO₂ turns limewater milky due to calcium carbonate formation.

A burning candle is extinguished in CO₂ due to lack of oxygen.

CO₂ turns universal indicator solution red, indicating acidity.

Na₂CO₃ is formed by reacting NaOH with CO₂.

NaHCO₃ (baking soda) is made from CO₂ and Na₂CO₃.

Used in fizzy drinks, fire extinguishers, and preserving food.

Contains sodium bicarbonate and dilute sulfuric acid.

Plants need CO₂ for photosynthesis to produce glucose and oxygen.

A crystal made of many layers of carbon atoms that slip over each other.

A single layer of carbon atoms in graphite.

An allotrope of carbon, rarely found in nature with structures like C60.

The first fullerene discovered, named for its dome-like shape.

A cylindrical fullerene molecule formed from carbon atoms.

A spherical fullerene molecule, resembling a soccer ball.

The purest form of coal containing about 95% carbon.

A non-crystalline carbon made from carbonizing organic materials.