Atoms

Front

What does the atomic mass of an element represent?

Back

The atomic mass represents the average mass of an atom of an element, measured in atomic mass units (amu), which accounts for the number of protons and neutrons in the nucleus.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the role of protons in an atom?

Back

Protons determine the atomic number of an element and contribute to the positive charge of the nucleus.

Front

How many protons are in an atom of nitrogen?

Back

An atom of nitrogen has 7 protons.

Front

What is the atomic number of carbon?

Back

The atomic number of carbon is 6.

Front

What particle is found in the nucleus of an atom along with protons?

Back

Neutrons are found in the nucleus of an atom along with protons.

Front

What is the relationship between atomic number and the number of protons?

Back

The atomic number of an element is equal to the number of protons in its nucleus.

Front

How do you determine the number of neutrons in an atom?

Back

The number of neutrons can be determined by subtracting the atomic number from the atomic mass.

Front

What is the significance of the electron cloud?

Back

The electron cloud represents the regions around the nucleus where electrons are likely to be found.

Front

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

Back

A proton is approximately 1836 times more massive than an electron.