Solids
- Construction: Buildings, bridges, roads, etc.
- Materials: Metals (e.g., steel, aluminum), ceramics (e.g., bricks, tiles), polymers (e.g., plastics, rubber)
- Electronics: Semiconductor devices (e.g., transistors, integrated circuits)
- Energy storage: Batteries, fuel cells
- Jewelry: Precious metals (e.g., gold, silver, diamonds)
Liquids
- Transportation: Gasoline, diesel, oil
- Industrial solvents: Paints, inks, cleaning agents
- Food: Drinks (e.g., water, milk, juice), oils (e.g., olive oil, cooking oil)
- Lubricants: Greases, oils
- Hydraulic systems: Brakes, steering systems
Gases
- Atmosphere: The air we breathe
- Fuel: Natural gas, propane, hydrogen
- Anesthetics: Ether, nitrous oxide
- Welding and cutting: Oxygen, acetylene
- Industrial processes: Nitrogen, hydrogen