These high school chemistry worksheets are full of pictures, diagrams, and deeper questions covering all aspects of stoichiometry! This unit is meant to cover the basics of stoichiometry, the mole concept, empirical and molecular formulas, percent composition, limiting reactant problems, and percent yield problems. This unit is designed to help students practice these skills that are important for the rest of the year in chemistry. This unit is part of my Differentiated Chemistry Whole Year Homework Bundle. These are non-editable PDF files. Each PDF file contains the student page, the answer key, and my terms of use page. Please see my preview for more details. Frequently Asked Questions: 1. Why should you purchase this bundle? - This unique homework sheet unit (as part of my whole year bundle) will help you teach a cohesive and consistent program all year. - These homework pages were carefully designed with a wealth of images! I have created many of the images myself and other images are licensed from professional designers. These homework pages are not plain worksheets with text questions that can be easily copied from a textbook. Each page is meant to help students to learn chemistry in a very visual way. Students circle, color, and analyze pictures and diagrams in ways that are far superior to plain text textbook questions. 2. What does this unit contain? This unit contains 16 pages (I am working on posting them to be sold separately as well): 1. Introduction to the Mole 2. Calculating Molar Mass from a Chemical Formula 3. Mass to Moles 4. More Mole Calculations 5. Writing Empirical Formulas from Chemical Formulas 6. Percent Composition from Chemical Formula 7. Decipher the Empirical Formula: Two Ways 8. Molecular Formula from the Empirical Formula and Molar Mass 9. Percent Composition, Empirical Formula, and Molecular Formula 10. Stoichiometry: Moles to Moles 11. Stoichiometry Word Problems: Given Moles of Reactants 12. Stoichiometry Word Problems: Given Mass 13. Stoichiometry Word Problems: Given Volumes and Densities 14. Limiting Reactant Problems: Step by Step 15. Limiting Reactant: A Big Word Problem 16. Percent Yield from Actual and Expected Yields 3. How many pages does this unit contain? This unit contains 16 student pages plus an answer key for every page. 4. What will the format of each page be? Each page will be unique. Each is designed to roughly cover the material that I would teach in an hour long class period. These are terrific for daily homework assignments because they don’t take too long to complete. These pages have been carefully designed in Illustrator. I have created a unique set of questions to help students to review material taught in class and think deeper about the material. Many of the pages ask students to highlight or color something, to identify items in a diagram, to match related concepts, or interact with a topic in a new way. Many of the pages ask students to connect more than one concept; they are intended to help students see the bigger picture in each unit. A few pages ask students to use the internet to do a little research. If you own any of my other resources, don’t worry about repeat pages. These homework pages are truly unique and separate from my activities. These homework pages will truly complement any activities or resources you already have or use in your class. 5. How do I handle homework? First of all, I don’t grade it. I learned in my early teaching years that when I grade homework, I am rewarding students who copied off of their one studious friend the period before my class, and I am penalizing students who have limited educational time outside of school. I often give time at the end of the period to work on “homework” pages. Often, I start off the next day’s class with the answer key projected onto some sort of screen (ELMO or projector) so that students can check their answers as they walk in. My students know that they will do better in my class if they do the homework and I care about effort more than being correct. 6. What if you want to grade homework? Are answer keys included? Are they easy to grade? Answer keys are included (for almost all of the pages, where it makes sense to have an answer key). I designed these pages to be pretty simple to grade, if you want to do that. 7. Why is each homework page only one page? In my time as a teacher, I have noticed that for some reason, homework assignments that have more than one side of a page are just neglected by students. If I hand out a one sided homework page and tell them, here’s your homework, they say, yay, it’s just 1 page! They will often at least start it if not finish it before the end of the day. I really think there is a psychological barrier to starting an assignment with two sides. Call me crazy, but test it out! Try giving my homework assignments and watch your class actually do their homework! If you want to give two pages, you can print these out and then copy 2 back to back for your students. A way to save paper would be to print all of the homework assignments and copy them as a packet. This is great to give students all at once in the beginning of the unit, so they have every page in advance, which works great if they’re absent! Check out my Chemistry Doodle Notes for some engaging resources that thoroughly explain Chemistry concepts in a versatile way!  Contact Us If you have any questions or concerns, please reach out to us on the question and answer section of my store and we will get back to you quickly! Terms of Use: Purchasing my teaching resources allows you to: * make copies for your own classes only. * place this file on your own password-protected class page or server (Blackboard, Google Drive, etc) AS LONG AS no other teacher has access to that class webpage. This resource is for you, the purchaser, alone. You are not allowed to distribute this digital resource to other teachers or post this resource on any webpage or server that is available for public view. If you and a team of teachers would like to use this resource together, please purchase additional licenses on the resource purchase page. Failure to comply with these terms of use is a copyright infringement and a violation of the Digital Millennium Copyright Act (DMCA). Clipart and elements found in this PDF are copyrighted and cannot be extracted and used outside of this file without permission or license. Files are partially or fully non-editable to protect the images that are copyrighted and purchased through licenses. Thanks for understanding! © Bethany Lau  All Rights Reserved.