Atoms, Isotopes, and Bohr Models

Front

What is the value representing the number of protons in an element?

Back

Atomic Number

Front

In a correctly written symbol, what is located in the 'A' position?

Back

Mass Number

Front

What is the average mass of all the isotopes of an element?

Back

Atomic Mass

Front

How many neutrons does a Carbon 13 atom have?

Back

7

Front

What are valence electrons?

Back

Electrons farthest away from the nucleus.

Front

What is an atom?

Back

The basic unit of a chemical element, consisting of protons, neutrons, and electrons.

Front

What are isotopes?

Back

Atoms of the same element that have different numbers of neutrons.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is the difference between atomic mass and mass number?

Back

Atomic mass is the weighted average of isotopes, while mass number is the total count of protons and neutrons.

Front

What does the Bohr model represent?

Back

A model of the atom that depicts electrons orbiting the nucleus in defined paths.