Atomic Structure

Front

Known for his Atomic Theory. This theory states that all matter is composed of extremely small particles.

Back

Dalton

Front

Who discovered the electron using the cathode-ray tube and is known for the plum pudding "chocolate chip cookie model"?

Back

Thomas

Front

Who discovered the proton using the gold foil experiment and proposed a model of an atom with a nucleus of positive charge surrounded by empty space where electrons orbit?

Back

Rutherford

Front

Made Dalton's model invalid. Protons occupy a dense central region called the nucleus. Electrons orbit the nucleus much like planets orbiting the sun.

Back

Bohr

Front

Who discovered the neutron and concluded the nucleus contains a particle with equal mass to the proton but is electrically neutral?

Back

Chadwick

Front

Who discovered the wave nature of electrons and suggested that all matter have wave properties?

Back

L. De Brogile

Front

Discovered Quantum Numbers that describe the probability of electrons location at a certain time.

Back

Schrodinger

Front

What is the mass number?

Back

Number of protons + Number of Neutrons

Front

What is the Atomic Number?

Back

Number of Protons

Front

Has a negative charge and its particles can move freely.

Back

Electron