The Importance of Isotopes

The video explains that while the number of protons in an element remains constant, the number of neutrons can vary, leading to different isotopes. Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons. The example of carbon is used to illustrate this concept, showing that carbon can have either 6 or 8 neutrons.

What remains constant in an element, even when the number of neutrons changes?

• The atomic mass

• The number of electrons

• The chemical properties

• The number of protons

What term is used to describe atoms of the same element with different numbers of neutrons?

• Isomers

• Allotropes

• Ions

• Isotopes

Which of the following statements is true about isotopes?

• They are different elements.

• They have different numbers of protons.

• They have the same number of neutrons.

• They have the same number of protons but different numbers of neutrons.

Which element is mentioned as an example of having isotopes in the video?

• Carbon

• Nitrogen

• Oxygen

• Hydrogen

How many neutrons can carbon isotopes have, as mentioned in the video?

• 4 or 6

• 7 or 9

• 5 or 7

• 6 or 8