1st Semester final review #1: At. Theory and Radioactivity

Front

Which subatomic particle is not found in the nucleus of an atom?

Back

Electron

Front

Back

Front

What is the correct order of historical developments leading to the modern model of the atom?

Back

The atom is a hard sphere. Most of the atom is empty space. Electrons exist in orbitals outside the nucleus.

Front

What is the hottest part of the Bunsen burner flame?

Back

Tip of the inner blue cone.

Front

Rank the following nuclear radiation types from biggest size to smallest size: alpha, beta, gamma.

Back

Alpha, beta, gamma.

Front

What is the charge of a proton?

Back

Positive (+1) charge.

Front

What is the charge of a neutron?

Back

Neutral (0) charge.

Front

What is the charge of an electron?

Back

Negative (-1) charge.

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.