The Periodic Table: Atomic Number

The video tutorial explains the concept of atomic numbers by comparing them to unique identifiers like license plate numbers. It highlights that no two elements have the same atomic number, similar to how no two cars share a license plate. The tutorial further delves into the atomic structure of carbon, which has six protons, and nitrogen, which constitutes about 70% of our air and has an atomic number of seven. The importance of atomic numbers in categorizing elements is also discussed.

What is the atomic number of an element based on?

• The number of neutrons in an atom

• The total mass of an atom

• The number of electrons in an atom

• The number of protons in an atom

Which element is primarily found in the remains of burned logs?

• Oxygen

• Carbon

• Hydrogen

• Nitrogen

How many protons does carbon have?

• 5

• 4

• 7

• 6

What percentage of our air is made up of nitrogen?

• 80%

• 70%

• 60%

• 50%

Why are atomic numbers important in chemistry?

• They indicate the temperature of an element

• They help in categorizing elements

• They show the age of an element

• They determine the color of an element