Questions With Answers > Science Trivia > Hydrogen Trivia Quiz Questions

Science Trivia        Science Questions        Science Trivia Questions        Science Test        Scientific Questions        Science Quiz        Hubble Space Telescope        Science Trivia Quizzes        Physics Questions        Physics Trivia Questions        Science Questions and Answers        Geology Questions        Gravity Trivia Questions        Hydrogen Trivia Questions        Helium Trivia Questions        Chemical Element Carbon Questions        AI - Artificial Intelligence Questions       

 
 

Hydrogen Trivia Questions

Science Trivia Questions About the Chemical Element Hydrogen

 

Science Questions And Answers About the Chemical Element Hydrogen

Hydrogen is a chemical element with what chemical symbol?
A: H.

What is the atomic number for hydrogen?
A: 1.

What is the atomic weight of hydrogen?
A: 1.00794.

Hydrogen is the lightest element on the what?
A: Periodic table.

Its monatomic form (H) is the most "what" in the universe?
A: Abundant chemical substance.

Hydrogen constitutes roughly 75% of all what?
A: Baryonic mass.

Non-remnant stars are mainly composed of what?
A: Hydrogen in its plasma state.

 

The most common isotope of hydrogen, termed protium (name rarely used, symbol 1H), has what?
A: A single proton and zero neutrons.

When did the universal emergence of atomic hydrogen first occur?
A: During the recombination epoch.

Hydrogen readily forms covalent compounds with most what?
A: Non-metallic elements.

Most of the hydrogen on Earth exists in what form?
A: Molecular forms such as in the form of water or organic compounds.

Hydrogen plays a particularly important role in what type of reactions?
A: Acid–base.

When was hydrogen gas first artificially produced?
A: In the early 16th century, via the mixing of metals with acids.

In 1766–81, Henry Cavendish was the first to recognize that hydrogen gas was a what?
A: Discrete substance, and that it produces water when burned.

 

What does hydrogen mean in Greek?
A: "water-former".

Industrial production is mainly from what?
A: The steam reforming of natural gas.

Most hydrogen is employed near its production site, with the two largest uses being what?
A: Fossil fuel processing (e.g., hydrocracking) and ammonia production, mostly for the fertilizer market.

Hydrogen is a concern in metallurgy as it can what?
A: Embrittle many metals.

The Space Shuttle Main Engine burnt hydrogen with oxygen, producing what?
A: A nearly invisible flame at full thrust.

Hydrogen gas is highly what?
A: Flammable.

Hydrogen gas forms explosive mixtures with air if it is what?
A:  4–74% concentrated.

 

Hydrogen gas forms explosive mixtures with chlorine if it is what?
A: 5–95% concentrated.

The mixtures may be ignited by what?
A: Spark, heat or sunlight.

What is the hydrogen autoignition temperature?
A: In air, is 500 °C (932 °F)

Pure hydrogen-oxygen flames emit what type of light?
A: Ultraviolet.

Hydrogen flames in other conditions are what color?
A: Blue, resembling blue natural gas flames.

The destruction of the what, was an infamous example of hydrogen combustion?
A: Hindenburg airship.

H2 reacts with every what?
A: Oxidizing element.

 

Hydrogen can react spontaneously and violently at room temperature with what?
A: Chlorine and fluorine.

What is the ground state energy level of the electron in a hydrogen atom?
A:  −13.6 eV.

Protium, the most common isotope of hydrogen has how many electrons and protons?
A: One proton and one electron.

Unique among all stable isotopes, it has no what?
A: Neutrons.

H is the most common what?
A: Hydrogen isotope with an abundance of more than 99.98%.

Because the nucleus of this isotope consists of only a single proton, it is given formal name?
A: Protium.

The other stable hydrogen isotope, is known as what?
A: Deuterium.

 

Deuterium contains what in its nucleus?
A: One proton and one neutron.

 Essentially all deuterium in the universe is thought to have been produced when?
A: At the time of the Big Bang.

Deuterium is not radioactive, and does not represent a what?
A: Significant toxicity hazard.

Water enriched in molecules that include deuterium instead of normal hydrogen is called what?
A: Heavy water.

Heavy water is used as a what for nuclear reactors?
A: Neutron moderator and coolant.

 Deuterium is also a potential fuel for what?
A: Commercial nuclear fusion.