History of the Atom

Front

In Dalton's Atomic Theory, all elements consist of __________ that cannot be divided.

Back

Atoms

Front

Bohr discovered that electrons are located in __________.

Back

circular orbits around the nucleus

Front

What is a particle with one negative charge called?

Back

electron

Front

J.J. Thomson provided evidence that an atom contains __________.

Back

negatively charged particles

Front

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

Back

All answers are correct

Front

What is the nucleus of an atom?

Back

The central part of an atom that contains protons and neutrons.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutral particles found in the nucleus of an atom.

Front

What is an electron?

Back

A negatively charged particle that orbits the nucleus of an atom.

Front

What did Rutherford's gold foil experiment demonstrate about the atom?

Back

Atoms are mostly empty space with a small, dense, positively charged nucleus.