Atomic Theory Review Flashcard

Front

Who was the first scientist to propose atomic theory?

Back

John Dalton

Front

What two particles contribute to the atomic mass number?

Back

Protons and Neutrons

Front

What is the charge of a proton?

Back

Positive

Front

What is the basic unit of matter?

Back

Atom

Tags

NGSS.MS-PS1-1

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

Who discovered the proton in 1911?

Back

Ernest Rutherford

Front

What is the atomic mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is the atomic number of Neon?

Back

10

Front

What are the three main subatomic particles?

Back

Protons, Neutrons, and Electrons

Front

What is the charge of an electron?

Back

Negative

Tags

NGSS.MS-PS2-3