← Chemistry
H₂O
Inorganic

Water

Universal solvent. Covers 71% of Earth's surface. Essential for all known life. Unique hydrogen bonding gives it unusual properties.

CO₂
Inorganic

Carbon Dioxide

Greenhouse gas produced by combustion and respiration. Used in photosynthesis. Atmospheric concentration has risen from 280ppm to 420ppm+ since industrialization.

NaCl
Inorganic

Sodium Chloride

Common table salt. Ionic compound formed from Na⁺ and Cl⁻ ions. Essential for biological functions and food preservation.

H₂SO₄
Acid

Sulfuric Acid

One of the most widely produced industrial chemicals. Used in car batteries, fertilizer production, and chemical manufacturing. Highly corrosive.

NH₃
Inorganic

Ammonia

Nitrogen-hydrogen compound. Key in fertilizer production via the Haber process. Critical for feeding half the world's population.

C₆H₁₂O₆
Organic

Glucose

Simple sugar and primary energy source for cells. Product of photosynthesis. Broken down via glycolysis and the citric acid cycle.

CH₄
Organic

Methane

Simplest hydrocarbon. Main component of natural gas. Potent greenhouse gas - 80x more warming than CO₂ over 20 years.

HNO₃
Acid

Nitric Acid

Strong acid used in fertilizer and explosives production. Reacts with metals to form metal nitrates. Key industrial chemical.

UO₂
Nuclear

Uranium Dioxide

Ceramic nuclear fuel used in the vast majority of nuclear power reactors worldwide. High melting point (~2865°C).

PuO₂
Nuclear

Plutonium Dioxide

Used in mixed oxide (MOX) nuclear fuel and radioisotope thermoelectric generators (RTGs) powering deep space probes.

UF₆
Nuclear

Uranium Hexafluoride

Used in uranium enrichment processes. Gaseous at room temperature, allowing separation of U-235 by centrifuge or diffusion.

D₂O
Nuclear

Heavy Water

Water where hydrogen is replaced by deuterium (²H). Used as a neutron moderator in CANDU reactors. Allows use of natural uranium as fuel.