Understanding Atomic Numbers and Elements

The video tutorial explains how to determine which element has 14 protons by using the periodic table. It introduces the concept of atomic number, which equals the number of protons in an element. The tutorial guides viewers on how to locate the atomic number above the element symbol on the periodic table. It then identifies silicon as the element with an atomic number of 14, thus having 14 protons. The video concludes with a recap of these key points.

What does the atomic number of an element represent?

• The atomic mass of the element

• The number of neutrons in the element

• The number of protons in the element

• The number of electrons in the element

Where can you find the atomic number on the periodic table?

• Beside the atomic mass

• Above the element symbol

• Next to the element name

• Below the element symbol

As you move across a period on the periodic table, how does the atomic number change?

• It decreases by one

• It remains the same

• It increases by one

• It doubles

Which element has an atomic number of 14?

• Nitrogen

• Oxygen

• Silicon

• Carbon

What is the relationship between the atomic number and the number of protons in an element?

• The atomic number equals the number of protons

• The atomic number is half the number of protons

• The atomic number is unrelated to the number of protons

• The atomic number is double the number of protons