Atomic Structure and Charge Concepts

The video tutorial explains the basic concepts of atomic structure, including atomic number, mass number, and net charge. It demonstrates how to identify the number of protons, neutrons, and electrons in an atom and solve related problems. The tutorial includes examples of filling in atomic characteristics in a table and solving advanced atomic problems.

What does the atomic number of an atom represent?

• The number of neutrons

• The total mass of the atom

• The number of protons

• The number of electrons

How is the mass number of an atom calculated?

• By adding the number of protons and electrons

• By subtracting the number of neutrons from electrons

• By subtracting the number of electrons from protons

• By adding the number of protons and neutrons

If an atom has a net charge of 1+, what does this indicate?

• There is one more electron than protons

• There is one more proton than electrons

• The number of protons and electrons are equal

• There is one more neutron than protons

Given an atomic number of 7 and a mass number of 15, how many neutrons are present?

• 15

• 7

• 8

• 22

If an atom has a net charge of 2+, how many more protons than electrons does it have?

• 4

• 3

• 2

• 1

In a table problem, if an atom has 10 electrons and a net charge of -3, how many protons does it have?

• 13

• 10

• 3

• 7

What is the atomic number if an atom has 7 protons?

• 9

• 7

• 11

• 5

If the mass number is 25 and there are 11 neutrons, how many protons are there?

• 36

• 25

• 14

• 11

With a net charge of 1+, how many electrons are there if there are 14 protons?

• 12

• 15

• 14

• 13

What does a net charge of -3 indicate about the number of electrons compared to protons?

• 3 more protons than electrons

• Equal number of protons and electrons

• 3 more neutrons than protons

• 3 more electrons than protons