Mass Spectrometry Quiz

1.
Who built the first mass spectrometer in Czechia?
- Čermák, Hanuš, Jech, Cabicar
- Červinka, Dědek, Ferles
- Jára Cimrman
Your answer:

Correct answer:

The first mass spectrometer in the country was built in the Laboratory of Physical Chemistry of the Czechoslovak Academy of Sciences. Four young scientists, Vladimír Čermák, Vladimír Hanuš, Čestmír Jech and Josef Cabicar, took part in its construction. At the time of the post-war shortage, it was very difficult to find the necessary components; some parts originated from captured German military equipment. The mass spectrometer was of the Nier type with simple focusing and 60° magnetic field, pumped by a mercury diffusion pump. The device was completed after two years, in 1953. The construction of this instrument was an extraordinary achievement awarded a year later by the State Prize. [Z. Herman, Chem. Listy 104, 955, 2010]
2.
What is the electric charge of an ion with m/z = m?
- 1 C
- 1.602 176 634 x 10^-19 C
- 1 eV
Your answer:

Correct answer:

The particle carries one elementary charge, the value of which is 1.602 176 634 × 10⁻¹⁹ C (exactly).
3.
What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?
- The particle follows a curved path and continues to follow this path until it forms a complete circle
- The particle follows a helical path
- The particle follows a straight line and accelerates
Your answer:

Correct answer:

The magnetic force is perpendicular to the velocity so that it does no work on the charged particle. The particle’s kinetic energy and speed thus remain constant. The direction of motion is affected but not the speed.
4.
Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?
- Berlin, Germany
- Ostrava, Czechia
- Klosterneuburg, Austria
Your answer:

Correct answer:

Josef Mattauch was born in 1895 in the city of Mährisch Ostrau, in what is now the Czech Republic, then part of the Austrian-Hungarian Empire.
5.
Chemical ionization (CI) is a soft ionization technique used in mass spectrometry. Who discovered it?
- Burnaby Munson and Frank H. Field
- Michael Barber
- Hans-Dieter Beckey
Your answer:

Correct answer:

Chemical ionization was discovered in the laboratories of the Humble Oil and Refining Company in Baytown, TX. Munson and Field’s seminal paper on chemical ionization was published in 1966. [https://doi.org/10.1021/ja00964a001]
6.
Who made molecular elephants fly?
- John B. Fenn
- Joseph J. Thomson
- W. and O. Wright
Your answer:

Correct answer:

John Fenn was awarded Nobel Prize in Chemistry in 2002 for his work related to electrospray ionization of biological macromolecules. His famous phrase, "we made elephants fly" refers to the ability of electrospray to generate gas-phase ions from big protein molecules.
7.
Which element has the largest number of stable isotopes?
- Molybdenum
- Tin
- Ytterbium
Your answer:

Correct answer:

Naturally occurring tin is a mixture of its ten stable isotopes and they are found in the percentages as follows: ¹¹²Sn (1.0 %), ¹¹⁴Sn (0.7 %), ¹¹⁵Sn (0.3 %), ¹¹⁶Sn (14.5 %), ¹¹⁷Sn (7.7 %), ¹¹⁸Sn (24.2 %), ¹¹⁹Sn (8.6 %), ¹²⁰Sn (32.6 %), ¹²²Sn (4.6 %), and ¹²⁴Sn (5.8 %). Molybdenum has six stable isotopes, ytterbium seven.
8.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?
- Francis William Aston
- Wolfgang Paul
- John Bennett Fenn
Your answer:

Correct answer:

Aston is a 44-kilometer lunar impact crater located along the northwestern limb of the Moon. The crater was named in honor of Francis W. Aston.
9.
What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?
- The particle follows a curved path and continues to follow this path until it forms a complete circle
- Neither the trajectory nor the velocity of the particle changes
- The particle either accelerates or decelerates, depending on the field direction and the particle charge sign
Your answer:

Correct answer:

If a positive charge is moving in the same direction as the electric field vector the particle's velocity will increase. If it is moving in the opposite direction it will decelerate. If a negative charge is moving in the same direction as the electric field vector the particle will decelerate. If it is moving in the opposite direction it will accelerate.
10.
Until 2019, the kilogram unit was defined using an international prototype kept at the International Bureau of Weights and Measures in France. The International Prototype of the Kilogram was made of an alloy of platinum and one other metal. The metal was:
- Gold
- Iridium
- Rhenium
Your answer:

Correct answer:

The International Prototype of the Kilogram was a cylinder with a height and diameter of 39 mm made of an alloy of 90% platinum and 10% iridium.

Mass Spectrometry Quiz

Mass Spectrometry Quiz

Thank you for taking our quiz!

1.
Who built the first mass spectrometer in Czechia?

2.
What is the electric charge of an ion with m/z = m?

3.
What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?

4.
Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?

5.
Chemical ionization (CI) is a soft ionization technique used in mass spectrometry. Who discovered it?

6.
Who made molecular elephants fly?

7.
Which element has the largest number of stable isotopes?

8.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

9.
What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?

10.
Until 2019, the kilogram unit was defined using an international prototype kept at the International Bureau of Weights and Measures in France. The International Prototype of the Kilogram was made of an alloy of platinum and one other metal. The metal was:

Czech Museum
of Mass Spectrometry

Our partners

Mass Spectrometry Quiz

Mass Spectrometry Quiz

Thank you for taking our quiz!

1. Who built the first mass spectrometer in Czechia?

2. What is the electric charge of an ion with m/z = m?

3. What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?

4. Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?

5. Chemical ionization (CI) is a soft ionization technique used in mass spectrometry. Who discovered it?

6. Who made molecular elephants fly?

7. Which element has the largest number of stable isotopes?

8. Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

9. What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?

10. Until 2019, the kilogram unit was defined using an international prototype kept at the International Bureau of Weights and Measures in France. The International Prototype of the Kilogram was made of an alloy of platinum and one other metal. The metal was:

Czech Museumof Mass Spectrometry

Our partners

1.
Who built the first mass spectrometer in Czechia?

2.
What is the electric charge of an ion with m/z = m?

3.
What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?

4.
Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?

5.
Chemical ionization (CI) is a soft ionization technique used in mass spectrometry. Who discovered it?

6.
Who made molecular elephants fly?

7.
Which element has the largest number of stable isotopes?

8.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

9.
What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?

10.
Until 2019, the kilogram unit was defined using an international prototype kept at the International Bureau of Weights and Measures in France. The International Prototype of the Kilogram was made of an alloy of platinum and one other metal. The metal was:

Czech Museum
of Mass Spectrometry