Chemistry: Percent Composition

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Chemistry Corner
Grade Levels
9th - 12th, Homeschool
Formats Included
  • Zip
14 slides, 15 pages
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  1. ***Choose between the Percentage Composition, Empirical & Molecular Formulas Lessons Unit Bundle or the Percentage Composition, Empirical & Molecular Formulas MEGA Unit Bundle. *** The Lessons Bundle contains 3 lessons, each lesson has an animated, editable PowerPoint, Student Notes (Cornell
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The concept for this lesson is percentage composition. At this point in the year, students should have just finished a nomenclature unit, and feel comfortable writing and naming chemical formulas. They should be able to calculate molar mass, mole conversions, and use simple formulas. I teach this lesson after the nomenclature unit, and after a quick mole review lesson. I do like to challenge my honors and advanced honors students on this lesson—stretch the brain. Included, you will find ways to differentiate this lesson for standard and honors chemistry classes.


The student will calculate percent composition.

Prior Knowledge for Students: Students should be comfortable with nomenclature, molar mass, and mole conversions prior to this lesson.

Teacher Prep Time: Just print and go!

Lesson Duration: One class period plus practice.

Included in This Product:

  • Editable, Animated PowerPoint (14 slides)
  • Cornell Style Student Notes that follow the PowerPoint (Cloze Notes)
  • Student Example of Completed Notes
  • Homework w/KEY—all problems completely worked out. (Differentiated to two levels: Honors & Standard)
  • Extra Practice Problems for whiteboard practice (Honors & Standard)
  • Check for Understanding (exit ticket) w/KEY
  • Teacher Notes pages (2 pages) Slide-by-slide background notes for the PowerPoint.

Note on the PowerPoint: The PowerPoint included in this product is editable, and the teacher notes describes ways to differentiate the instruction. It is also animated, which means that it may appear busy or overlapping in the slide mode, but will be awesome in the slide show mode! Please don’t edit the PowerPoint until you have seen it in the slide show mode!

This lesson is appropriate for grades 9-12 chemistry

This will be a lesson you will want to use year after year!

Chemistry Corner


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Chemistry Doodle Notes for the Year

Chemistry: The Mole


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LICENSING TERMS: By purchasing this product, you own a license for one teacher only for personal use in your classroom. Licenses are non-transferable, meaning they cannot be passed from one teacher to another. No part of this resource is to be shared with colleagues or used by an entire grade level, school, or district without purchasing the proper number of licenses. I you are a coach, principal or district interested in transferable licenses to accommodate yearly staff changes, please contact TpT for Schools at or find more information under “Schools” on the Teachers Pay Teachers site.

COPYRIGHT TERMS: ©Chemistry Corner™. Please note – all material included in this resource belongs to Chemistry Corner™. By purchasing, you have a license to use the material, but you do not own the material. This resource, or any portion of this resource, may not be uploaded to the internet in any form, including classroom/personal websites or network drives, unless the site is password protected and can only be accessed by students—no other teachers or anyone else on the internet.

Total Pages
14 slides, 15 pages
Answer Key
Teaching Duration
55 minutes
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