Atomic Facts
Chemistry in the World
Chemistry in the Body
The Periodic Table
History of Chemistry
100

The central component of an atom, comprised of protons and neutrons

What is the nucleus?

100

Plants use this pigment to generate glucose

What is chlorophyll?

100

The body is mostly comprised of this

What is water?

100

This element has the smallest atomic radius

What is hydrogen?

100

This process converts hydrogen and nitrogen into ammonia, discovered by Fritz and Carl, whom it was named after

What is the Haber-Bosch Process?

200

These subatomic particles can be found in a "cloud"

What are electrons?

200

This inert gas is the most prevalent in the atmosphere.

What is Nitrogen?

200

Enzymes in biological systems serve as these

What are catalysts?

200

This is the most electronegative element

What is Fluorine?

200

This atomic model proposed by J.J. Rutherford was named after this sweet treat

What is plum pudding?

300

An atom which has lost an electron becomes this

What is a cation?

300
Your voice sounds higher when you inhale helium due to this reason

How is helium less dense than air?

300

Each strand of DNA is held to its counterpart through these IMFs

What are hydrogen bonds?

300

Helium is a member of this alphabetical block on the periodic table, despite being separated

What is the s block?

300

She took the first crystal structure of DNA to confirm its double-helical shape

Who is Rosalind Franklin?

400

The splitting of a nucleus into smaller clusters of protons and neutrons

What is nuclear fission?

400

This gas, with the formula O3, recently had a hole in it and can create free radicals in biological systems

What is Ozone?

400

This barrier protects the nervous system from dangerous chemicals

What is the blood brain barrier?
400

This bimolecular halogen is notable as it is the only one of its kind to be a liquid at room temperature

What is bromine?

400

He invented both dynamite and the most prestigious chemistry award

Who is Alfred Nobel?

500

Pigments derive their color from the excitation and relaxation of electrons between these orbitals

What are D orbitals?

500

This polymer is used as a non-stick coating in cookware

What is Teflon?
500

The pH of blood, on average

What is 7.4?

500

This radioactive element is the largest atom in the s block

What is francium?

500

He is credited with inventing the modern periodic table

Who is Dmitri Mendeleev?