Subatomic Particles
Atomic Models
General Questions
Atomic Mass
Electric Charge
100

The subatomic particles in alphabetical order.

What are electrons, neutrons, and protons?

100

The creator of the Plum Pudding model.

Who is J. J. Thomson?

100

The central part of an atom

What is the nucleus

100

The formula for finding atomic mass.

What is the sum of protons and neutrons?

100

The charge of an atom with more protons than electrons.

What is positive?

200

The particle(s) with a non-zero electric charge.

What are protons and electrons?

200
The name of the creator of the currently accepted atomic model.

Who is Erwin Schrodinger?

200

The name of the region in which electrons are found.

What is the electron cloud?

200

The mass of 34 protons and 45 neutrons

What is 79 atomic units?

200

The formula for finding electric charge.

What is the difference in number of protons and electrons?

300

The particle(s) with significant mass.

What are protons and neutrons?

300

The name of the model that had electrons on fixed rings representing the energies.

What is the Bohr orbital model?

300

The number of protons in one atom Thallium?

What is 81 protons?

300

The number of neutrons in an atom of Molybdenum with an atomic mass of 96

What is 54 neutrons?

300

The electric charge of an atom of Sulfur with 18 electrons.

What is -2e?

400

The location that contains the majority of the mass of an atom

What is the nucleus?

400

The new feature in the Rutherford atomic model

What is a nucleus?

400

The particle that determines the isotope of an atom

What is the neutron?

400

The type of mass listed at the bottom of an element's box.

What is the average mass?

400

The number of electrons in a Strontium atom that has a net charge of positive two (+2).

What is 36 electrons?

500

The ratio of mass between an electron and a neutron.

What is 1/2000th (0.0005)

500

The person who rearranged the periodic table according to the number of protons in an atom.

Who is Henry Moseley?

500

The number of naturally occurring elements.

What is 94 naturally occurring elements?

500

The mass of one molecule of H2O (rounded)

What is 18 Daltons?

500

The electric charge of the nucleus of an atom of Chromium.

What is a positive 24 charge (+24e)?

M
e
n
u