Atomic Theory Test Review

Front

What particle was discovered using cathode ray tubes in the late 1800s?

Back

Electron

Front

What does the deflection of alpha particles in Rutherford's gold foil experiment suggest about gold atoms?

Back

Gold atoms consist mostly of empty space.

Front

How did Thomson's model describe the positively charged part of the atom?

Back

A uniform mass surrounding the electrons with a total positive charge equal to the total negative charges of the electrons.

Front

What discovery contributed to Bohr's model of the atom?

Back

Elements have characteristic wavelengths of light emission and absorption.

Front

How does the quantum mechanical model differ from the Bohr model?

Back

The quantum model describes electron locations as probability functions instead of fixed orbits.

Front

What is the main focus of atomic theory?

Back

To explain the nature and behavior of atoms.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the nucleus of an atom composed of?

Back

Protons and neutrons.