Understanding the Periodic Table

Who created the periodic table?

• Marie Curie

• Dmitri Mendeleev

• Isaac Newton

• Albert Einstein

What did Mendeleev predict with his periodic table?

• The theory of relativity

• New planets

• New elements

• The end of the universe

What does the atomic number of an element represent?

• Number of neutrons

• Number of electrons

• Number of protons

• Total number of protons and neutrons

What are the vertical columns in the periodic table called?

• Periods

• Groups

• Blocks

• Rows

Which group contains elements known as noble gases?

• Group 7

• Group 1

• Group 3

• Group 0

What is unique about the elements in Group 1?

• They are gases at room temperature

• They are all nonmetals

• They are non-reactive

• They all have one electron in the outer shell

Which elements are known as alkali metals?

• Group 7

• Group 2

• Group 1

• Group 0

What property do all noble gases share?

• They are all liquids

• They have full outer shells

• They are highly reactive

• They are radioactive