Isotopes in Chemistry
Grade 11 · Science · 45 min
What's Included
Learning Objective
I can calculate the average atomic mass of an element using the relative abundances of its isotopes.
Warm-Up Video
Unknown Channel · 5:00
GCSE Chemistry - Elements, Isotopes & Relative Atomic Mass #2
Practice Questions
9 questions · Short answer
Exit Ticket
Quick comprehension check
“A sample of magnesium contains two stable isotopes: magnesium-24 (abundance 78.99%) and magnesium-26 (abundance 21.01%). Calculate the average atomic mass of magnesium to one decimal place. Show all work. An element has three isotopes: isotope P with a mass of 30 amu and an abundance of 50%, isotope Q with a mass of 31 amu and an abundance of 30%, and isotope R with a mass of 32 amu and an abundance of 20%. Calculate the average atomic mass of this element to one decimal place. Show all work.”
Complete Lesson Package
Get all 3 ready-to-use resources:
