Atoms Ions And Isotopes The Building Blocks Of Matter

The video tutorial explores the similarities and differences between atoms, ions, and isotopes. It begins by explaining subatomic particles: protons, neutrons, and electrons, and their roles in determining atomic properties. The periodic table is introduced as a tool for understanding atomic number and mass. The video then discusses how atoms maintain a neutral charge and how ions form through electron gain or loss. Finally, isotopes are explained as variations of the same element with different neutron numbers, affecting atomic mass.

Which subatomic particle is positively charged and found in the nucleus?

• Photon

• Proton

• Neutron

• Electron

Where do electrons reside according to Bohr's atomic model?

• In the proton shell

• In the atomic cloud

• In energy levels

• In the nucleus

What does the atomic number on the periodic table represent?

• Average atomic mass

• Number of protons

• Number of neutrons

• Number of electrons

What is the significance of the average atomic mass on the periodic table?

• It indicates the number of neutrons

• It is the weighted average of isotopes

• It is the sum of protons and electrons

• It represents the number of protons

How is the type of element determined in an atom?

• By the atomic mass

• By the number of protons

• By the number of neutrons

• By the number of electrons

If an atom has equal numbers of protons and electrons, what is its charge?

• Positive

• Negative

• Neutral

• Variable

What happens to an atom when it loses electrons?

• It changes element

• It remains neutral

• It becomes positively charged

• It becomes negatively charged

What is the charge of an ion that has gained electrons?

• Neutral

• Negative

• Double positive

• Positive

What defines an isotope of an element?

• Different number of protons

• Different number of electrons

• Different atomic number

• Different number of neutrons

Which of the following is an example of isotopes?

• Nitrogen-14 and Nitrogen-15

• Oxygen-16 and Oxygen-18

• Carbon-12 and Carbon-14

• Hydrogen-1 and Helium-4