Exploring Mendeleev's Periodic Table and Its Elements

Who was the first person to create a periodic table of elements?

• Marie Curie

• Dimitri Mendeleev

• Albert Einstein

• Isaac Newton

What did Mendeleev use his periodic table to predict?

• The speed of light

• The properties of undiscovered elements

• The theory of relativity

• The structure of DNA

Tags

NGSS.HS-PS1-1

How many elements were known when Mendeleev created his first periodic table?

• 30

• 120

• 60

• 90

What are the vertical columns on the periodic table called?

• Periods

• Rows

• Blocks

• Groups

What are the horizontal rows on the periodic table called?

• Periods

• Columns

• Families

• Groups

What does the zigzag line on the periodic table separate?

• Alkali metals and alkaline earth metals

• Gases and liquids

• Solids and liquids

• Metals and non-metals

Which elements are found to the left of the zigzag line on the periodic table?

• Non-metals

• Metalloids

• Noble gases

• Metals

What are the elements in Group 1 of the periodic table known as?

• Halogens

• Noble gases

• Alkali metals

• Transition metals

What color represents gases at room temperature on the periodic table?

• Blue

• Green

• Black

• Red

What does the atomic number of an element represent?

• Atomic mass

• Number of protons

• Number of electrons

• Number of neutrons