Atomic Structure NS - updated with paper flashcard

Front

What is the atomic mass of an atom?

Back

The atomic mass of an atom is the sum of the protons and neutrons in its nucleus.

Front

What are the subatomic particles with a negative charge?

Back

Electrons are the subatomic particles that have a negative charge.

Front

Where is the atomic mass located in an atom?

Back

The atomic mass is located in the nucleus of the atom.

Front

Which particles in an atom have a mass of 1 amu?

Back

Protons and neutrons each have a mass of approximately 1 atomic mass unit (amu).

Front

What is the charge of protons?

Back

Protons have a positive charge.

Front

What is the charge of neutrons?

Back

Neutrons have no charge (they are neutral).

Front

What is the atomic number of an element?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Front

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

Back

To find the number of neutrons, subtract the atomic number (number of protons) from the atomic mass.

Front

What is the electron cloud?

Back

The electron cloud is the region around the nucleus of an atom where electrons are likely to be found.