← Chemistry
Hβ‚‚O
Inorganic

Water

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

COβ‚‚
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.

Hβ‚‚SOβ‚„
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.

CHβ‚„
Organic

Methane

Simplest hydrocarbon. Main component of natural gas. Potent greenhouse gas - 80x more warming than COβ‚‚ 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.

UOβ‚‚
Nuclear

Uranium Dioxide

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

PuOβ‚‚
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.

Dβ‚‚O
Nuclear

Heavy Water

Water where hydrogen is replaced by deuterium (Β²H). Used as a neutron moderator in CANDU reactors. Allows use of natural uranium as fuel.