U3 CP Chem Atomic Structure

Front

What is the average atomic mass of silicon?

Back

28.086

Front

What is the central region of an atom where neutrons and protons are located?

Back

Nucleus

Front

Who discovered the electron?

Back

Joseph Thomson

Front

What does the atomic number represent?

Back

The number of protons in an atom.

Front

Which subatomic particles contribute the most to the mass of an atom?

Back

Protons and Neutrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the mass of an electron compared to a proton?

Back

Much smaller, approximately 1/1836 of a proton.

Front

What is the significance of the atomic mass unit (amu)?

Back

It is a standard unit of mass that quantifies mass on an atomic or molecular scale.