Atomic Theory Flashcardiz

Front

What does the cloud model of the atom look like?

Back

A cloud of electrons floating around the nucleus.

Front

Who discovered the nucleus of the atom?

Back

Rutherford, through his gold foil experiment.

Front

How can the nucleus of an atom be described?

Back

Dense and positively charged.

Front

What did John Dalton state about atoms?

Back

Elements are made of atoms, atoms of a given element are identical, atoms cannot be subdivided, created, nor destroyed.

Front

What subatomic particles were missing from Dalton's model?

Back

All of the subatomic particles are missing.

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What charge do protons carry?

Back

Positive charge.

Front

What charge do electrons carry?

Back

Negative charge.

Front

What is the charge of neutrons?

Back

Neutrons have no charge (neutral).

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.