Atomic Math Practice

Front

What is the atomic mass of sodium?

Back

23

Front

How many electrons does Fluorine have?

Back

9

Front

What is the atomic number of sodium?

Back

11

Front

What is the atomic mass of Fluorine?

Back

19

Front

What is the atomic number of Boron?

Back

5

Front

Define atomic mass.

Back

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

Front

Define atomic number.

Back

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

Front

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

Back

In a neutral atom, the number of electrons equals the atomic number.

Front

What is an isotope?

Back

Atoms of the same 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

Subtract the atomic number from the atomic mass.