Science quiz | The quiet wonder of tungsten

question:

1. Sealite and X are two important mineral sources of tungsten. The letter tungsten in the periodic table comes from the letter X. The name X is probably due to its resemblance to certain animals that eat sheep, as its extraction requires large amounts of tin. Name it X.

2. Of all the elements, tungsten has the highest _____________ at about 3,700 Kelvin, higher than tantalum and platinum. This property has made tungsten the most suitable element for use in incandescent light bulbs. Please fill in the blanks.

3. Tungsten is the element with the highest ______ ______ naturally occurring in some organisms. It is found in some archaea and bacteria. In more complex organisms, it is mildly toxic. Please fill in the blanks.

4. During World War II, the country operated large-scale tungsten mines and was under pressure from both the Allies and the Axis powers to supply the metal used to make weapons and ammunition. . It initially said it would supply both countries, but after repeated attacks from Germany and diplomatic pressure from the United States, it imposed a moratorium on all metal exports. Please say the name of the country.

5. Because tungsten and another metal, Y, have approximately the same density, tungsten has been used to make counterfeit bars of Y, which are highly valuable. My name is Y.

visual:

Identify this facility. Once in operation, the ultra-hot plasma is contained in a central donut-shaped container plated with tungsten to withstand the temperatures.

answer:

1. Wolframite

2. Melting point

3. Atomic number

4. Portugal

5. Gold

Visual: ITER