Periodic Table Basics FLASHCARD

Front

Which scientist created the first periodic table?

Back

Dmitri Mendeleev

Front

You can find the _____ an atom has by subtracting 'atomic mass - number of protons'.

Back

number of neutrons

Front

What is the atomic number of oxygen?

Back

8

Front

Which elements are colored red on the periodic table?

Back

nonmetals

Front

Atomic mass is the number of ______ + _______.

Back

protons, neutrons

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom.

Front

What does the atomic mass represent?

Back

The weighted average mass of an element's isotopes.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals.

Front

What is the significance of the periodic table's arrangement?

Back

Elements are arranged by increasing atomic number and similar properties.

Front

What are the main categories of elements in the periodic table?

Back

Metals, nonmetals, and metalloids.