+
Chem 104, Isotopic Abundance

Chem 104, Isotopic Abundance

Author: Jesse Olson
Description:

Introduce the concept of atomic mass.
Introduce the concept that various isotopes of an element may be present in differing amounts.
Describe how to use isotopic abundance to calculate atomic mass.

This learning packet digs deeper into the concept of atomic mass, moving beyond the simple mathematical formula used to calculate it and into the harder concept of relative abundance. The lesson is in a video format and presents practice problems to the students.

(more)
See More
Try a College Course Free

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to over 2,000 colleges and universities.*

Begin Free Trial
No credit card required

25 Sophia partners guarantee credit transfer.

221 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 20 of Sophia’s online courses. More than 2,000 colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.

Tutorial

A Briefing on Isotopes

Isotopes are an often confusing topic.  The simple take home message is that elements can occur in different forms of isotopes.  What makes an isotope an isotope is differing numbers of neutrons in an atom's nucleus.  What makes this topic difficult at times is working with relative isotopic abundances.  PRACTICE these if they are what is hard for you. 

Source: olson

Introduction to Isotopic Abundance

An introductory lesson on isotopic abundance and finding average atomic mass. Includes example problems. It is about 14 minutes long but covers some complex ideas.

Source: olson