Atomic Theory

Front

What did Rutherford's experiments demonstrate about atoms?

Back

Atoms are mostly empty space.

Front

Who proposed the atomic model that includes electrons embedded in a positively charged 'soup'?

Back

Thomson.

Front

What is the isotope notation for an element with atomic number 52 and 78 neutrons?

Back

Tellurium-130.

Front

Which subatomic particle has no charge?

Back

Neutron.

Front

Who is credited with the discovery of the nucleus?

Back

Rutherford.

Front

What is the atomic theory?

Back

A scientific theory that matter is composed of discrete units called atoms.

Front

What are protons?

Back

Positively charged particles found in the nucleus of an atom.

Front

What are electrons?

Back

Negatively charged particles that orbit the nucleus of an atom.

Front

What is the nucleus?

Back

The central part of an atom, containing protons and neutrons.

Front

What is atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element.