Intro to Atoms

Front

What is the Thomson Model of the atom?

Back

The Thomson Model, also known as the 'plum pudding model', describes the atom as a sphere of positive charge with negatively charged electrons embedded within it.

Front

What is the charge and density of the nucleus of an atom?

Back

The nucleus of an atom is dense and positively charged.

Front

Who proposed that the atom is a solid sphere?

Back

John Dalton proposed that the atom is a solid sphere.

Front

What are the conclusions of Rutherford’s gold foil experiment?

Back

1. The atom is mostly empty space. 2. The nucleus is positively charged. 3. The atom has a small dense nucleus.

Tags

NGSS.HS-PS1-8

Front

Who discovered the nucleus of the atom?

Back

Ernest Rutherford is credited with discovering the nucleus of the atom.

Front

What is the Bohr Model of the atom?

Back

The Bohr Model describes the atom as having electrons orbiting the nucleus in fixed paths or energy levels.

Front

What did Dalton's atomic theory state?

Back

Dalton's atomic theory states that all matter is made of atoms, which are indivisible and indestructible particles.

Tags

NGSS.HS-PS1-7

Front

What is the significance of the Rutherford model?

Back

The Rutherford model introduced the concept of a dense nucleus at the center of the atom, changing the understanding of atomic structure.

Tags

NGSS.HS-PS1-8

Front

What is an electron?

Back

An electron is a negatively charged subatomic particle that orbits the nucleus of an atom.

Front

What is the difference between protons and neutrons?

Back

Protons are positively charged particles found in the nucleus, while neutrons have no charge and also reside in the nucleus.