Isotopes and Ions Unveiled Through Sodium and Carbon Examples

The video explains the difference between isotopes and ions. Isotopes are atoms with the same number of protons but different numbers of neutrons, resulting in different mass numbers. Examples include sodium and carbon isotopes. Ions are atoms that gain or lose electrons, resulting in a charge. Cations are positively charged ions formed by losing electrons, while anions are negatively charged ions formed by gaining electrons. Examples include sodium, magnesium, and chlorine ions. The video concludes with a summary of these concepts.

What defines an isotope of an element?

• Different number of electrons, same number of protons

• Same number of neutrons, different number of protons

• Same number of protons, different number of neutrons

• Same number of protons and neutrons

How many neutrons does sodium-23 have?

• 13

• 14

• 12

• 11

What is the mass number of carbon-14?

• 14

• 6

• 7

• 13

What happens to an atom when it becomes an ion?

• It gains or loses protons

• It gains or loses electrons

• It gains or loses neutrons

• It changes its atomic number

What is a cation?

• An atom that has lost electrons

• An atom with more neutrons than protons

• An atom that has gained electrons

• An atom with a neutral charge

How does magnesium form a cation?

• By losing one neutron

• By gaining one proton

• By losing two electrons

• By gaining two electrons

What is the charge of a chloride ion?

• Negative two

• Positive two

• Negative one

• Positive one

What suffix is used for naming anions?

• ate

• ous

• ite

• ide

What is the main difference between isotopes and ions?

• Isotopes have different numbers of electrons, ions have different numbers of neutrons

• Isotopes have different numbers of protons, ions have different numbers of neutrons

• Isotopes have different numbers of neutrons, ions have different numbers of electrons

• Isotopes and ions both have different numbers of protons

What is the charge of an oxide ion?

• Negative one

• Positive two

• Negative two

• Positive one