Atomic Theory

Front

What is the central region of an atom where its neutrons and protons are located?

Back

Nucleus

Front

Who was the first person to propose a theory about the atom?

Back

Democritus

Front

What is all matter made of?

Back

Atoms

Front

Which part of the atom did Ernst Rutherford discover through the use of gold foil?

Back

Proton

Front

What is the subatomic particle that has a negative charge and is located outside of the nucleus?

Back

Electron

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of a neutron?

Back

Neutral

Front

What is the charge of an electron?

Back

Negative

Front

What is the term for the region around the nucleus where electrons are likely to be found?

Back

Electron Cloud

Front

Who proposed the atomic theory that matter is made up of indivisible particles called atoms?

Back

John Dalton