Why does the % Abundance of each isotope matter when figuring out the average atomic mass of an element? (why can’t you just add up the average masses, divide by three and get an atomic mass?)

Use your Beanium lab data as evidence to support your claim.



Use this space to create a strong student explanation using the CER Framework.

Claim

A statement or

conclusion that

answers the original question/problem.

“Does not explain”

What is a strong claim that a student could make?





Evidence

Scientific data that supports the claim. The data need to be

appropriate and

sufficient to support the claim.

(quantitative)

What are appropriate pieces of evidence that students should use to support their claim? (Note as many as are appropriate. at least 3)













Reasoning

A justification that connects the evidence to the claim. It shows why the data count as evidence by using

appropriate and

sufficient scientific principles.

What is the reasoning that students would use to connect their evidence to their claim? (Noting that the reasoning should be connected to the scientific principle(s)/targeted idea(s) associated with the lesson.)

Why does the Abundance of each isotope matter when figuring out the average atomic mass of an element why cant you just add up the average masses divide by thre class=
Why does the Abundance of each isotope matter when figuring out the average atomic mass of an element why cant you just add up the average masses divide by thre class=