ATOMIC STRUCTURE

Front

Who proposed the 'solar system' model of an atom?

Back

Niels Bohr proposed the 'solar system' model of an atom where electrons revolve around the nucleus.

Front

What is a particle that orbits around the nucleus?

Back

An electron is a particle that orbits around the nucleus.

Front

What are the three subatomic particles that make up an atom?

Back

The three subatomic particles that make up an atom are protons, neutrons, and electrons.

Front

What structure did Rutherford discover that contains protons and neutrons?

Back

Rutherford discovered the nucleus, which contains protons and neutrons.

Front

What are the conclusions based on Rutherford’s gold foil experiment?

Back

The conclusions are: 1) Atom is mostly empty space, 2) The nucleus is positively charged, 3) The atom has a small dense nucleus. All answers are correct.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of a neutron?

Back

A neutron has no charge (it is neutral).

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

Where are protons located in an atom?

Back

Protons are located in the nucleus of an atom.

Front

Where are electrons located in an atom?

Back

Electrons are located in the electron cloud surrounding the nucleus.