The Versatile Metal: Tungsten and Its Applications

The video explores tungsten, a grayish-white, lustrous metal with atomic number 74 and symbol W. It discusses its historical discovery, isolation, and naming origins. Tungsten's use in incandescent bulbs is highlighted, noting inefficiencies. The metal's role in creating durable alloys like high-speed steel is explained, along with its industrial applications in aerospace and radiation shielding. Tungsten's hypoallergenic properties make it suitable for jewelry, offering a gold-like density and resistance to scratching.

What is the origin of the chemical symbol 'W' for tungsten?

• It comes from the mineral wolframite.

• It is derived from the Swedish word for 'heavy stone'.

• It is named after the scientist who discovered it.

• It is an abbreviation of the word 'tungsten'.

Why were tungsten filament bulbs phased out in some countries?

• They were not durable enough for long-term use.

• They were too expensive to produce.

• They consumed too much electricity and produced more heat than light.

• They emitted harmful radiation.

What makes high-speed steel, which contains tungsten, particularly useful?

• It is lightweight and easy to mold.

• It can withstand high temperatures without losing hardness.

• It is resistant to corrosion in marine environments.

• It is cheaper to produce than other steels.

In which industries is tungsten's high melting point particularly beneficial?

• Pharmaceutical and healthcare industries

• Food and beverage industries

• Aerospace and automotive industries

• Textile and fashion industries

Why is tungsten used as a substitute for gold in jewelry?

• It changes color over time, adding aesthetic value.

• It has a similar density to gold and is hypoallergenic.

• It is more expensive than gold.

• It is easier to shape than gold.