Periodic Table Flashcard

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 atomic mass of an element?

Back

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

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

What is the atomic number of magnesium?

Back

12

Front

What is the atomic mass of hydrogen?

Back

1.008

Front

What is the name of the element with atomic number 13?

Back

Aluminum

Front

What is the atomic mass of calcium?

Back

40.08

Front

What is the atomic number of helium?

Back

2

Front

What are groups in the periodic table?

Back

Groups are vertical columns in the periodic table that contain elements with similar chemical properties.

Front

What are periods in the periodic table?

Back

Periods are horizontal rows in the periodic table that indicate the number of electron shells in the elements.