Atomic History and Structure Flashcard

Front

Subatomic particles with a positive charge

Back

protons

Front

A tiny but very dense, positively charged portion of the atom that holds most of the atomic mass

Back

Nucleus

Front

Who discovered the electron within the atom?

Back

Thomson

Front

Discovered the nucleus of the atom through the Gold Foil Experiment

Back

Rutherford

Front

Created the Planetary Model of the atom

Back

Bohr

Front

Calculation used to find the number of neutrons in an atom

Back

Mass Number - Atomic Number

Front

These particles have a mass of 1 amu

Back

protons and neutrons

Front

What subatomic particles are located in the electron cloud? Options: quarks, protons, electrons, neutrons

Back

electrons

Front

Which is an electron? Options: A, B, C

Back

A

Front

Which item on this element square is the chemical symbol? Options: Copper, 29, Cu, 63.546

Back

Cu