Atomic Structure and Properties

The video tutorial covers counting subatomic particles in atoms, focusing on neutrons, protons, and electrons. It provides examples using oxygen, zinc, and lithium, explaining how to determine atomic numbers and mass. The video also touches on reactivity and valence electrons, concluding with a call to action for viewers to engage with the content.

What is the main topic discussed in the introduction of the video?

• Molecular geometry

• Chemical bonding

• Counting subatomic particles and reactivity

• Periodic table trends

What does the atomic number of an element represent?

• The number of neutrons

• The number of protons

• The atomic mass

• The number of valence electrons

How do you determine the number of neutrons in an atom?

• Subtract the atomic number from the atomic mass

• Divide the atomic mass by the atomic number

• Add the atomic number to the atomic mass

• Multiply the atomic number by the atomic mass

What is the atomic number of oxygen?

• 18

• 8

• 6

• 16

How many valence electrons does oxygen have?

• 4

• 8

• 2

• 6

What is the atomic number of zinc?

• 34

• 32

• 30

• 28

What is the mass number of zinc?

• 60

• 68

• 62

• 65

How many neutrons are in a zinc atom if its atomic number is 30 and its mass number is 65?

• 30

• 35

• 40

• 45

What is the atomic number of lithium?

• 1

• 2

• 3

• 4

How many neutrons are in a lithium atom if its atomic number is 3 and its mass number is 7?

• 2

• 3

• 5

• 4