Understanding Atomic Numbers and Elements

The video tutorial explains how to identify an element by its atomic number using the periodic table. It highlights that the atomic number equals the number of protons in an element. The tutorial specifically focuses on finding the element with seven protons, which is nitrogen. Dr. B concludes by reiterating the importance of the atomic number, also known as the proton number.

What tool is essential for determining the number of protons in an element?

• A chemical equation

• A microscope

• A periodic table

• A calculator

What does the atomic number of an element represent?

• The element's mass

• The number of neutrons

• The number of electrons

• The number of protons

How does the atomic number change as you move across the periodic table?

• It fluctuates randomly

• It increases

• It remains the same

• It decreases

Which element has an atomic number of seven?

• Oxygen

• Carbon

• Hydrogen

• Nitrogen

What is another name for the atomic number?

• Mass number

• Electron number

• Proton number

• Neutron number