Chapter 7.6

Question 1

What is an isotope?

Answer 1

An atom that has more of fewer neutrons in its nucleus/

Question 2

What does atomic mass equal?

Answer 2

Number of protons + neutrons

Question 3

What are some examples of isotopes?

Answer 3

• Carbon-12 (6 protons; 6 neutrons)
• Carbon-13 (6 protons; 7 neutrons)
• Carbon-14 (6 protons; 8 neutrons)

Question 4

What does the average mass of isotope represent?

Answer 4

Average mass of the isotopes of an
element is the relative atomic mass of the
element.