Atomic Theory

Front

What is the main idea of Atomic Theory?

Back

Atomic Theory states that matter is made up of small, indivisible particles called atoms.

Front

What did Rutherford's gold foil experiment demonstrate?

Back

Rutherford's gold foil experiment demonstrated that there is a dense positively charged nucleus at the center of an atom.

Front

What particle in the atom has a positive charge?

Back

Proton.

Front

Who proposed that all atoms of the same element are exactly alike?

Back

John Dalton.

Front

What is the charge of an electron?

Back

Negative.

Front

Where are electrons located in an atom?

Back

Electrons are found outside the nucleus of an atom.

Front

What is the charge of a proton?

Back

Positive.

Front

What is a neutron?

Back

A neutron is a particle found in the nucleus of an atom that has no charge (neutral).

Front

What did Democritus contribute to Atomic Theory?

Back

Democritus proposed that matter is made up of small, indivisible particles called atoms.

Front

What is the nucleus of an atom?

Back

The nucleus is the dense center of an atom, containing protons and neutrons.