Carbon Trivia Quiz Questions With Answers

Science questions about the element carbon.


Carbon Trivia Quiz Questions With Answers

Carbon is a chemical element with symbol C and what atomic number?
A: 6.

As a member of group 14 on the periodic table, it is what?
A: Nonmetallic and tetravalent.

Being tetravalent means it has four electrons available to form what?
A: Covalent chemical bonds.

 What are the three naturally occurring isotopes of carbon?
A: 12C, 13C and 14C .

14C is radioactive, with a half-life of about how long?
A: 5,730 years.

The best known allotropes of carbon are what?
A: Graphite, diamond, and amorphous carbon.

Under normal conditions all carbon allotropes are what?
A: Solids.


Which form of carbon is the most thermodynamically stable?
A: Graphite.

What are the largest sources of inorganic carbon?
A: Lime stones, dolomites and carbon dioxide.

Significant quantities of inorganic carbon also occur in organic deposits of what?
A: Coal, peat, oil and methane clathrates.

Carbon forms, more compounds than what?
A: Any other element.

 Carbon is the 15th most abundant element in the Earth's what?
A: Crust.

Carbon is the fourth most abundant element in the what?
A: Universe. ( by mass after hydrogen, helium, and oxygen).

Carbon is present in all known forms of what?
A: Life.


The allotropes of carbon include the hardest naturally occurring substance which is what?
A: Diamond.

They also include one of the softest known substances which is what?
A: Graphite.

Carbon is known to form how many different compounds?
A: Almost ten million.

Most forms of carbon are comparatively "what" under normal conditions?
A: Un-reactive.

At standard temperature and pressure, carbon resists all but the strongest what?
A: Oxidizers.

Carbon does not react with sulfuric acid, hydrochloric acid, chlorine or any what?
A: Alkalis.

As of 2009, what form of carbon appears to be the strongest material ever tested?
A: Graphene.


What form of carbon makes a very good lubricant?
A: Graphite.

Diamond is an excellent electrical what?
A: Insulator.

Diamond  has the highest breakdown electric field of what?
A: Any known material.

Diamond is the best known naturally occurring thermal what?
A: Conductor.

Atomic carbon is very short-lived and, therefore, carbon is stabilized in various multi-atomic structures with different molecular configurations called what?
A: Allotropes.

At very high pressures carbon forms the more compact allotrope called what?
A: Diamond.

Fullerenes have a graphite-like structure, but instead of purely hexagonal packing, they also contain pentagons (or even heptagons) of what?
A: Carbon atoms, which bend the sheet into spheres, ellipses or cylinders.


Carbon is abundant in the Sun, stars, comets, and in the atmospheres of most what?
A:  Planets.

It has been estimated that the solid earth as a whole contains how much carbon?
A:  4360 million gigatonnes.

 About what percentage of all industrial diamonds used in the U.S. are now made synthetically?
A: 30%.

Carbon-14 is formed in upper layers of the troposphere and the stratosphere by a reaction that is precipitated by what?
A: Cosmic rays.

To form a carbon atomic nucleus requires a almost simultaneous triple collision of alpha particles (helium nuclei) within the core of a what?
A: A giant or supergiant star.

No significant carbon was created during the what?
A: Big Bang.