Mastering Subatomic Particles Through The Periodic Table

This video tutorial explains how to count subatomic particles using the periodic table. It covers the significance of the atomic number in identifying elements, the concept of neutral atoms, and the relationship between protons and electrons. The tutorial also discusses the average atomic mass and how to calculate the number of neutrons. Examples using fluorine and magnesium illustrate these concepts in practice.

What does the atomic number of an element represent?

• The number of neutrons in the nucleus

• The atomic mass of the element

• The number of protons in the nucleus

• The total number of electrons

How can you identify an element using the periodic table?

• By its atomic mass

• By its atomic number

• By its electron configuration

• By its chemical symbol

In a neutral atom, how do the number of protons and electrons compare?

• Electrons are always more than protons

• They are equal

• It depends on the element

• Protons are always more than electrons

What is the charge of an electron?

• Neutral

• Positive two

• Negative one

• Positive one

What does the atomic mass of an element represent?

• The number of protons only

• The number of electrons and neutrons

• The number of protons and neutrons

• The number of protons and electrons

How can you calculate the number of neutrons in an atom?

• Multiply the atomic number by the atomic mass

• Add the atomic number to the atomic mass

• Divide the atomic mass by the atomic number

• Subtract the atomic number from the atomic mass

For fluorine, with an atomic number of 9 and a mass of 19, how many neutrons does it have?

• 19

• 10

• 28

• 9

How many electrons does a neutral fluorine atom have?

• 19

• 10

• 9

• 28

For magnesium, with an atomic number of 12 and a mass of 24, how many neutrons does it have?

• 24

• 48

• 36

• 12

How many protons are in a magnesium atom?

• 12

• 24

• 36

• 48