Atomic Scientists

Front

What is a particle with no charge?

Back

Neutron

Front

Who proposed that the small dense nucleus in an atom is surrounded by electrons?

Back

Rutherford

Front

Who stated that elements are made of tiny solid particles?

Back

Democritus

Front

In chemical reactions, what happens to atoms?

Back

Atoms are separated, combined, or rearranged.

Front

Who founded the proton?

Back

Rutherford

Front

What is the basic unit of matter?

Back

Atom

Front

What is the positively charged particle in an atom?

Back

Proton

Front

What is the negatively charged particle in an atom?

Back

Electron

Front

Who developed the atomic theory that matter is made of indivisible particles?

Back

Dalton

Front

What did Thomson discover about the atom?

Back

He discovered the electron.