Periodic Table

Front

What is the periodic table?

Back

A tabular arrangement of chemical elements, organized by increasing atomic number, electron configuration, and recurring chemical properties.

Front

What are groups in the periodic table?

Back

Vertical columns in the periodic table that contain elements with similar chemical properties.

Front

What are periods in the periodic table?

Back

Horizontal rows in the periodic table that indicate the number of electron shells in the elements.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals, typically found along the zig-zag line on the periodic table.

Front

What is the significance of Mendeleev's periodic table?

Back

Mendeleev organized elements by atomic mass and left spaces for undiscovered elements, predicting their properties.

Front

What are nonmetals?

Back

Elements that are typically poor conductors of heat and electricity, and are found on the right side of the periodic table.

Front

What is the atomic number?

Back

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

Front

What is a chemical family?

Back

A group of elements that have similar properties and are found in the same column of the periodic table.

Front

What is the role of electrons in determining an element's chemical properties?

Back

Electrons, particularly those in the outermost shell, determine how an element reacts with others.

Front

What are alkali metals?

Back

Highly reactive metals found in group 1 of the periodic table, such as lithium, sodium, and potassium.