Chemistry
This represents the number of protons in the nucleus of an atom, defining the identity of an element.
Atomic Number
The theoretical lowest possible temperature, understood by international agreement as equivalent to 0 Kelvin or −273.15 °C (−459.67 °F).
Absolute Zero
The powerhouse of the cell.
Mitochondria
Czechoslovakia peacefully split into these two sovereign European states.
Czech Republic and Slovakia
Deserts
Diego Maradona and Lionel Messi hail from this South American country (which recently won the world cup).
Argentina
It is any chemical compound that contains carbon-hydrogen or carbon-carbon bonds. There are four types of these: proteins, carbohydrates, lipids, and nucleic acids.
Organic Compounds
A principle which states that an increase in the speed of a fluid occurs simultaneously with a decrease in pressure or a decrease in the fluid's potential energy.
Bernoulli's Principle
Any member of a diverse polyphyletic group of photosynthetic, eukaryotic, mostly aquatic organisms ranging from simple unicellular microalgae to massive colonial or multicellular forms.
Algae
In modern historiography, the modern-day name for this European country is usually denoted as Kievan Rus' after its capital city.
Russia
This country just hosted the recently concluded World Cup.
Qatar
North America is home to this biggest island in the world.
Greenland
This is the number of discrete constituent particles in one mole of a substance, defined as exactly:
6.02214076 \times 10^{23}
Avogadro's Number
A quantity which describes the randomness of a substance or system.
Entropy
A series of chemical reactions which occurs as one of two primary phases of photosynthesis, specifically the phase in which carbon dioxide and other compounds are converted into simple carbohydrates such as glucose.
Calvin Cycle
It is the most populated European City within city limits (as of 2022)
The largest Middle Eastern country by population.
Egypt
The capital of this country is Bogota.
Colombia
This refers to the random motion of particles suspended in a medium (a liquid or a gas).
Brownian Motion
A type of subatomic particle that behaves according to Bose–Einstein statistics and possesses integer spin.
Boson
The shedding of flowers, leaves, and/or fruit following formation of scar tissue in a plant.
Abscission
Contained in Europe is this country, which is the smallest country in the world.
Vatican City
The largest Middle Eastern country by land area.
Saudi Arabia
It's North America's largest country in terms of land area.
Canada
Also known as the unified atomic mass unit, it is a non-SI unit of mass widely used in physics and chemistry. It is defined as 1⁄12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest.
Dalton (unit)
This law states that the electric current through a conductor between two points is directly proportional to the potential difference across the two points.
Ohm's Law
The branch of zoology that concerns the study of birds.
Ornithology
One in three people who live in this sovereign city-state located off the French Riviera is a millionaire.
Monaco
These are the two countries most affected by the recent earthquake that is dominating world news headlines.
Turkey and Syria
This North American state voted for statehood three times (to be a state of the U.S.): in 2012, 2017, and 2020.
Puerto Rico
A law of thermodynamics which states that the partial pressure of each gaseous component of an ideal mixture of liquids is equal to the vapor pressure of the pure component multiplied by its molar fraction in the mixture.
Raoult's Law
These type of methods in Nuclear Physics seek to describe the atomic nucleus from the bottom up by solving the non-relativistic Schrödinger equation for all constituent nucleons and the forces between them.
ab initio methods
An organ found in the digestive tract of some animals, including archosaurs (pterosaurs, crocodiles, alligators, and dinosaurs, including birds), earthworms, some gastropods, some fish, and some crustaceans.
Gizzard
Europe is bordered by the Arctic Ocean in the North, the Mediterranean Sea and the Black Sea to the south, and this ocean and its seas to the west.
Atlantic Ocean
At 420m below sea level, it is the lowest point on earth.
The Dead Sea
South America's least populous country.
Suriname