Understanding Isotopes

The video explains isotopes using carbon-12 and carbon-13 as examples. It covers atomic and mass numbers, highlighting that isotopes have the same atomic number but different mass numbers due to varying neutrons. The video discusses isotopes' chemical and nuclear properties, emphasizing that while chemical properties remain the same, nuclear properties differ. It includes practice on identifying isotopes using atomic symbols and concludes with a true or false quiz to reinforce learning.

What is the atomic number of carbon?

• 14

• 13

• 12

• 6

Which of the following is true about isotopes?

• They have different atomic numbers.

• They have the same mass number.

• They have the same number of protons.

• They are composed of different elements.

How do isotopes differ from each other?

• In their chemical properties

• In their mass numbers

• In their atomic numbers

• In their number of protons

What is the mass number of an isotope with 7 protons and 8 neutrons?

• 14

• 15

• 16

• 17

Which element has an atomic number of 11?

• Silicon

• Fluorine

• Nitrogen

• Sodium

What is the atomic symbol for an isotope with 9 protons and 10 mass number?

• Ne-10

• F-10

• N-10

• O-10

Is the statement 'Isotopes have the same number of neutrons' true or false?

• True

• False

Do isotopes have different chemical properties?

• No

• Yes

Which of the following is a true statement about isotopes?

• They have different nuclear properties.

• They have different atomic numbers.

• They have different chemical properties.

• They have the same mass number.

What is the relationship between atomic number and protons?

• Atomic number is unrelated to the number of protons.

• Atomic number is always greater than the number of protons.

• Atomic number is equal to the number of protons.

• Atomic number is less than the number of protons.