Periodic Table
Electron Configuration
General Chemistry
Scientists
Random Questions
100

This 1- or 2-letter abbreviation represents an element, such as "Au" for gold.

What is an atomic symbol?

100

These are the electrons found in the outermost shell of an atom, determining its reactivity.

What are valence electrons?

100

This subatomic particle has a positive charge and is found in the nucleus.

What is a proton?

100

This Russian chemist is credited with creating the first version of the Periodic Table.

Who was Dmitri Mendeleev?

100

Manu's birthday

What is April 19th?

200
This is what you have to look at in order to know the amount of valence electrons an atom has.
What is group number?
200

This principle states that electrons fill the lowest energy orbitals first (starting at 1s).

What is the Aufbau Principle?

200

This specific physical property describes how much "stuff" is packed into a space (Mass / Volume).

What is density?

200

He proposed the "Plum Pudding" model, suggesting electrons were embedded in a sphere of positive charge.

Who was J.J. Thomson?

200

Manu studied this in university.

What is Environmental Engineering?

300

Elements in this vertical column of the periodic table share similar chemical properties.

What is a Group (or Family)?

300

According to this rule, electrons will occupy empty orbitals of the same energy level before pairing up.

What is Hund’s Rule?

300

This term describes an atom that has gained or lost electrons, giving it a net charge.

What is an ion?

300

This scientist's model depicted electrons traveling in fixed, circular orbits around the nucleus, like planets.

Who was Niels Bohr?

300

The 6 different subjects Manu has taught in Ciencias.

French

Chemistry

Physics

Math 

Ecology

Geography

400

This is the name for the horizontal rows on the periodic table.

What is a Period?

400

This is the full electron configuration for the element Carbon (Atomic Number 6).

What is 1s22s22p2?

400

This is the term for a mixture that is uniform throughout, like salt dissolved in water.

What is a homogeneous mixture (or a solution)?

400

Often called the "Father of Modern Atomic Theory," he proposed that all matter is made of tiny, indivisible particles called atoms.

Who was John Dalton?

400

The purpose of the app Manu published recently. 

What is Chapalapp, to measure the area of water of Lake Chapala?

500

Located in Group 18, these gases are known for being extremely non-reactive because they have a full valence shell.

What are Noble Gases?

500

The maximum amount of electrons the d orbital can hold.

What is 10 electrons?

500

These are atoms of the same element that have the same number of protons but a different number of neutrons.

What are isotopes?

500

This German physicist is famous for his Uncertainty Principle, which states we cannot know both the exact position and momentum of an electron at the same time.

Who was Werner Heisenberg?

500

Manu's all time favorite singer.

Who is Lana del Rey?