Subatomic Particles and Ions: Calculating Protons, Neutrons, and Electrons

This tutorial guides chemistry students through the process of determining the number of subatomic particles in ions, specifically focusing on protons, neutrons, and electrons. The video provides two examples: calculating these particles in a carbon ion with a +4 charge and a manganese ion with a +7 charge. The instructor explains how to use the periodic table to find atomic numbers and how to apply equations to determine the number of electrons based on the given charge. The tutorial concludes with a preview of the next video, which will cover isotopes.

What is an ion?

• An atom that has gained or lost protons

• An atom that has gained or lost electrons

• An atom that has gained or lost neutrons

• An atom that has gained or lost its nucleus

How many protons does a carbon atom have?

• 6

• 4

• 8

• 12

In a carbon ion with a +4 charge, how many electrons are present?

• 8

• 4

• 6

• 2

What is the mass number of carbon-12?

• 6

• 12

• 18

• 24

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

• Subtract the atomic number from the mass number

• Add the atomic number to the mass number

• Multiply the atomic number by the mass number

• Divide the mass number by the atomic number

What is the atomic number of manganese?

• 25

• 30

• 55

• 60

In a manganese ion with a +7 charge, how many electrons are present?

• 25

• 32

• 18

• 30

What is the mass number of manganese-55?

• 55

• 60

• 30

• 25

How many neutrons are in manganese-55?

• 55

• 25

• 30

• 60

What will the next video focus on?

• Determining chemical reactions

• Determining atomic mass

• Determining subatomic particles in isotopes

• Determining subatomic particles in ions