Science9-12+
Average Atomic Mass Practice
By Megan M.
This 2-page practice set guides 10th graders through calculating average atomic mass, with fill-in-the-blank scaffolding for each step. It focuses on using decimal abundances directly in the calculation.
Customize for your classroom
Teacher Guide & Tips
- Use this practice set as a 30-minute independent work activity or homework assignment.
- Discussion question: Why is it important to use the decimal form of abundance (not the percentage) when calculating average atomic mass?
- For struggling learners, model the first problem together as a class, emphasizing where each number in the formula comes from.
- Advanced learners can be challenged to create their own average atomic mass problem, including identifying the elements and their isotopic abundances.
Science9-12+
Average Atomic Mass Practice
By Megan M.
This 2-page practice set guides 10th graders through calculating average atomic mass, with fill-in-the-blank scaffolding for each step. It focuses on using decimal abundances directly in the calculation.
Customize for your classroom
Teacher Guide & Tips
- Use this practice set as a 30-minute independent work activity or homework assignment.
- Discussion question: Why is it important to use the decimal form of abundance (not the percentage) when calculating average atomic mass?
- For struggling learners, model the first problem together as a class, emphasizing where each number in the formula comes from.
- Advanced learners can be challenged to create their own average atomic mass problem, including identifying the elements and their isotopic abundances.