Periodic Table

Front

The identity of an element on the periodic table is determined by the number of _______.

Back

protons

Front

How many protons does Potassium (K) have?

Back

19

Front

The columns in the periodic table are called _______.

Back

a group/family

Front

What is the atomic mass of Calcium (Ca)?

Back

40.08

Front

What are the blue elements (those on the right) on the periodic table?

Back

nonmetals

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What are periods in the periodic table?

Back

Horizontal rows of elements that share the same number of electron shells.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals.

Front

What is the significance of the zig-zag line on the periodic table?

Back

It separates metals from nonmetals.

Front

What are noble gases?

Back

Elements in Group 18 that are inert and do not readily react with other elements.