What are Isotopes?

The video explains that elements have the same atomic number, meaning they have the same number of protons. However, they can have different mass numbers due to varying numbers of neutrons, leading to isotopes. Isotopes are atoms of the same element with different masses but identical chemical properties. The video uses carbon-12 and carbon-14 as examples to illustrate isotopes, showing how they differ in neutron count. It also mentions other isotopes like hydrogen and chlorine, emphasizing that isotopes share chemical properties because neutrons do not affect chemical behavior.

What remains constant in all atoms of a particular element?

• Number of neutrons

• Mass number

• Number of electrons

• Number of protons

Which of the following statements is true about isotopes?

• They have different numbers of protons.

• They have different numbers of neutrons.

• They have different chemical properties.

• They have the same number of neutrons.

How many neutrons does carbon-14 have?

• 6

• 8

• 14

• 12

Which of the following is NOT an example of isotopes?

• Hydrogen and Deuterium

• Chlorine-35 and Chlorine-37

• Carbon and Nitrogen

• Carbon-12 and Carbon-14

Why do isotopes have the same chemical properties?

• Because they have different mass numbers.

• Because they have the same number of electrons.

• Because they have different atomic numbers.

• Because they have the same number of neutrons.