Aluminium (symbol Al, atomic number 13) is one of the most abundant metals in the Earth’s crust and an essential material in industries from aviation to everyday packaging. In Australia and the UK, it’s referred to as aluminium rather than “aluminum” (the spelling more common in North America). This lightweight yet durable metal plays a crucial role in modern infrastructure, technology, and sustainability efforts.
Quick Facts About Aluminium
| Property | Value/Description |
|---|---|
| Element Name | Aluminium |
| Symbol | Al |
| Atomic Number | 13 |
| Category | Post-transition metal |
| Standard State | Solid at 298 K |
| Density | 2.70 g/cm³ |
| Melting Point | 660.3 °C |
| Boiling Point | 2,470 °C |
| Discovered By | Hans Christian Ørsted (1825) |
| Occurrence | Found in bauxite ore, abundant in Australia |
For an interactive view of the full periodic table, check out this detailed periodic chart.
Australia’s Aluminium Strength – From Mines to Masterpieces
Australia is a leading producer of bauxite and alumina, with major mines in Queensland and the Northern Territory. Companies like Rio Tinto and Alcoa operate some of the largest aluminium refineries globally. From the Sydney Opera House’s gleaming roof tiles to high-speed trains and mining equipment, aluminium is everywhere in Australia’s infrastructure.
Common Uses of Aluminium
- Construction: Window frames, roofing, and cladding (especially in coastal areas for corrosion resistance)
- Transportation: Aircraft, trains, buses, and marine vessels
- Packaging: Beverage cans, food containers, foil wraps
- Electrical: Transmission lines due to its high conductivity and light weight
- Consumer Goods: Smartphones, laptops, bicycles
Aluminium Compounds
Aluminium rarely exists as a pure element in nature. Instead, it’s usually found as compounds such as:
- Aluminium oxide (Al₂O₃) – used in abrasives and ceramics
- Aluminium chloride (AlCl₃) – used in chemical manufacturing
- Aluminium sulphate (Al₂(SO₄)₃) – used in water treatment
These compounds are key in everything from industrial processes to everyday products.
Fun & Surprising Facts
- Aluminium is 100% recyclable without loss of quality.
- Recycling aluminium saves up to 95% of the energy required to produce it from raw bauxite.
- The Sydney Opera House tiles are coated with a special aluminium-based finish.
- Aluminium powder is a vital component in fireworks and rocket fuel.
FAQs
Q: Is aluminium an element?
Yes, aluminium is a pure chemical element with the symbol Al and atomic number 13.
Q: Is aluminium an element or a compound?
It’s an element, but it often occurs naturally in compound form (like aluminium oxide).
Q: Which element is a semiconductor — germanium, aluminium, tin, or iodine?
Germanium (Ge) is the semiconductor among these.
Q: Is aluminium foil an element or compound?
Aluminium foil is made of pure aluminium metal, so it’s an element in sheet form.
Q: Atoms of which element contain 25 protons — magnesium, aluminium, tin, or manganese?
Manganese has 25 protons.
Q: Gold, silver, sodium, and aluminium are all what type of element?
They are all metals.