Periodic Table

Front

What is the Periodic Table?

Back

A chart that organizes all known chemical elements based on their atomic number, electron configuration, and recurring chemical properties.

Front

Who is known as the father of the Periodic Table?

Back

Dmitri Mendeleev, who created the first widely recognized periodic table.

Front

What does atomic number represent?

Back

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

Front

What is an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a group in the Periodic Table?

Back

A vertical column in the periodic table that contains elements with similar chemical properties.

Front

What is a period in the Periodic Table?

Back

A horizontal row in the periodic table that indicates the number of electron shells in the elements.

Front

What is the significance of Mendeleev's periodic table?

Back

It was the first to organize elements by atomic mass and predict the existence of undiscovered elements.

Front

What element did Mendeleev predict would be found next to aluminum?

Back

Eka-aluminum, which is now known as gallium.

Front

What is gallium's melting point?

Back

30 degrees Celsius.

Tags

NGSS.MS-PS1-4

Front

What is a chemical symbol?

Back

A one or two-letter abbreviation used to represent an element on the periodic table.