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360Science™: The Stoichiometry of Filling a Balloon
Concepts: Balancing equations, stoichiometry, limiting reagents
Outcomes: Students will observe that no matter how much sodium bicarbonate is added, at some point it becomes the excess reagent and there is not enough acetic acid to react. As a result there is a limited amount of carbon dioxide gas that can be produced. When smaller amounts of sodium bicarbonate are added, it is the limiting reagent and the acetic acid is the excess. When the moles of sodium bicarbonate exceed the moles of acetic acid, the designations switch and acetic acid becomes the limiting reactant.
Associated Phenomena: What can make a recipe fail?
Our 1-year option provides access to all digital content for one year plus lab supplies for a single class of 30 students. Our 3-year option extends access to digital content to three years, with a 30% discount on refill supply kits years 2 and 3.
What is Flinn 360Science™?
We’re introducing a whole new way to teach experiential science! We’ve taken a hard look at science study from all perspectives and, thanks to the feedback of thousands of teachers nationwide, we’ve created a way to make it easier to provide personalized instruction while delivering the kind of lab experiences your students truly need.
Our new and comprehensive learning solutions are designed to bring science to life by giving you all the tools you need to incorporate more (and effective) hands-on learning in your classroom or lab. 360Science allows you to provide your students with the support they need to make real-world connections to key scientific principles and help make those abstract concepts concrete.
Every 360Science lab solves the most common challenges educators face in bringing more hands-on science to their students—from not having enough time to matching the right level of challenge for students’ abilities to providing appropriate background content, safety techniques, assessments and more.
Enable student-driven, blended learning through a unique combination of leveled lab instructions supporting prescriptive, guided- and open-inquiry lab exercises (see PDF resource for specific details) with robust digital content, such as videos and carefully curated Open Educational Resources (OER)—along with virtual reality and simulation exercises. From editable, digital instructions to assessments and alignment with Next Generation Science Standards (NGSS), we have everything you need to improve mastery, remove the intimidation factor and foster your students’ natural curiosity.
Materials Included in Kit:
Acetic acid, CH3COOH, 2 M, 750 mL
Sodium bicarbonate, NaHCO3, 170 g
Weighing dishes, 60
HS-PS1-7. Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.