Exploring Atomic Structure Through Carbon's Properties

The video tutorial explains how to use the periodic table to understand the physical properties of elements, using carbon as an example. It covers the concepts of atomic number, which indicates the number of protons, and atomic mass, which is the sum of protons and neutrons. The tutorial also explains the balance of protons and electrons in neutral atoms and how to calculate the number of neutrons by subtracting the atomic number from the atomic mass. The concept of isotopes and their impact on atomic mass is also discussed.

What does the atomic number of an element represent?

• The number of neutrons in the nucleus

• The total mass of the atom

• The number of electrons in an atom

• The number of protons in the nucleus

In a neutral atom of carbon, how many electrons are present?

• 12

• 8

• 6

• 4

What is the relationship between protons and electrons in a neutral atom?

• There are more electrons than protons

• Protons and electrons are unrelated

• There are more protons than electrons

• The number of protons equals the number of electrons

Why is the mass of electrons often considered negligible in atomic mass calculations?

• Because electrons are too far from the nucleus

• Because electrons have a positive charge

• Because electrons are much smaller in mass compared to protons and neutrons

• Because electrons do not contribute to chemical reactions

What is the atomic mass of carbon as listed on the periodic table?

• 12.01

• 12

• 14

• 6

How does the presence of isotopes affect the atomic mass of an element?

• It causes the atomic mass to be an average value

• It doubles the atomic mass

• It has no effect on the atomic mass

• It makes the atomic mass a whole number

Why is the atomic mass of carbon not a whole number?

• Because of the presence of neutrons

• Because of the presence of protons

• Because of the presence of electrons

• Because of the presence of isotopes

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

• Divide the atomic mass by the atomic number

• Multiply the atomic number by the atomic mass

• Subtract the atomic number from the atomic mass

• Add the atomic number to the atomic mass

What is the number of neutrons in a neutral atom of carbon?

• 12

• 6

• 4

• 8