Percent Comp. COOKIE Lab!

Grade Levels
9th - 12th, Homeschool
Resource Type
Formats Included
  • PDF
15 pages
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  1. Mole Unit – CURRICULUM BUNDLE(All items are PDF documents. Items cannot be edited.)Students will be able to:· Use dimensional analysis to convert between moles and molecules/formula units/atoms/ions.· Identify that a mole represents a set-amount just like a dozen represents a set-amount.o Identify t
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Percent Comp. COOKIE Lab!

Mole Unit

Safety Notice: The qualified lab-science professional leading and directing the lab is responsible for the safety procedures, instructions etc. This lab ONLY provides safety recommendations. The recommendations are not comprehensive. The lab leader/teacher is responsible for determining the appropriate safety procedures and following those procedures. Chemistry with Confidence LLC does NOT guarantee a safe lab.

Estimated Pre-Lab: 15 min.

Estimated Time in Lab & Post-Lab: 15-20 min.

Students will be able to…

· Calculate the percent composition of compounds.

· Calculate the percent composition of a crème filled cookie. Students will calculate the percent by mass of the two components (crème filling and 2 wafers) in a cookie.



· Lab Skill: How to "Tare" / "Zero-out" a Balance

· Percent Comp. COOKIE Lab

· Percent Comp. COOKIE Lab – KEY

· Percent Composition – WS #1

· Percent Composition – WS #2

· Percent Composition – WS #1 – KEY

· Percent Composition – WS #2 – KEY

(All items compiled in 1 PDF document. Document cannot be edited.)


· “Percent Comp. COOKIE Lab”

o First, teach students how to tare/zero-out a balance and record measurements accurately. See “Lab Skill: How to “Tare” / “Zero-out” a Balance” and “Percent Comp. COOKIE Lab – TEACHER INSTRUCTIONS” for more information.

o Next, have students complete the Pre-Lab questions for the “Percent Comp. COOKIE Lab.”

o Then, have students complete the “Percent Comp. COOKIE Lab.”

o See “Percent Comp. COOKIE Lab – TEACHER INSTRUCTIONS” for more information.

o Recommendation: Students cannot eat the cookie used in the lab for sanitary reasons. After the cookie used in the lab is thrown away and students have exited the lab area, give each student a cookie to eat.

· Assign “Percent Composition – WS #1” and “Percent Composition – WS #2” as needed for extra practice, HW, warm-up, or exit-ticket.

Additional Required Materials:

(These items are not included in the purchase.)

· Scientific Calculator per student

· Periodic Table per student

· 12 Electronic Balances

· 12 Weighing Boats

· 12 Plastic Spoons

· 1 Trash Can

· Paper towels (for cleaning)

· Crème filled Cookies (~250 cookies)

o ~80 cookies for the Lab

o ~170 cookies – 1 cookie per student (Optional)

· Optional: Small classroom item like a paperclip/eraser/pencil (See the PREPARING THE STUDENTS section)

· Optional: Cardstock and Lamination for theLab Skill: How to “Tare” / “Zero-out” a Balance” document.

***This item may also be purchased as a part of the Mole Unit – CURRICULUM BUNDLE!

***Check out more Chemistry with Confidence Mole Unit Curriculum!

***Check out more curriculum in the Chemistry with Confidence TeachersPayTeachers Store!

***Check out the Chemistry with Confidence website!

Happy Teaching :)

Total Pages
15 pages
Answer Key
Teaching Duration
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