Review Assessment - Atomic Structure and Avg Atomic Mass

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 the average atomic mass of an element?

Back

The average atomic mass is the weighted average of the masses of an element's isotopes, measured in atomic mass units (amu).

Front

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

Back

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

Front

What is the significance of protons in an atom?

Back

Protons determine the identity of an atom and its position on the periodic table.

Front

What is the charge of a neutron?

Back

Neutrons have no charge; they are neutral particles found in the nucleus of an atom.

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons, balancing the overall charge.

Front

What is isotopic notation?

Back

Isotopic notation is a way to represent an isotope of an element, typically written as 'Element-MassNumber' (e.g., Carbon-12).

Front

What does the term 'mass number' refer to?

Back

The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What is the role of electrons in chemical reactions?

Back

Electrons, particularly those in the outer shell, are involved in forming chemical bonds and determining an atom's reactivity.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average of an element's isotopes, while mass number is the total count of protons and neutrons in a specific isotope.