Skip to product information
1 of 1

Missing Mass - Unit Plan

Missing Mass - Unit Plan

View full details

Grades 6-8 | 11 (45 min) Classes

In this unit, students will answer the question, how can a model rocket launch be used to create a model of chemical reactions and the Law of Conservation of Mass?

Students will classify chemical and physical changes, identify indicators that a chemical reaction has taken place and conduct an experiment that will allow them to see the Law of Conservation of Mass in a chemical reaction. Students will apply their analysis of these results to the decision of what data is necessary to collect from a model rocket launch that will support the Law of Conservation of Mass. They will apply that knowledge to the creation of a model that represents the Law of Conservation of Mass in a model rocket launch. Following the data collection during launch, students will compare results and apply those results to a classification of open and closed systems.

Throughout the unit, students will be creating and revising a model of the Law of Conservation of Mass, ultimately using that model to complete a Claim-Evidence-Reasoning paragraph that answers the Essential Question.


Next Generation Science Standards (NGSS)


Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.


Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.


Develop a model to generate data for iterative testing and modification of a proposed object, tool, or process such that an optimal design can be achieved.

Science and Engineering Practices (SEP)

Asking and defining problems
Developing and using models
Planning and carrying out investigations
Analyzing and interpreting data
Engaging in argument from evidence

Cross Cutting Concepts (CCC)

Systems and system models

Energy and matter

Common Core Standards - ELA


Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks.


Use words, phrases, and clauses to clarify the relationships among claim(s) and reasons.


Use precise language and domain-specific vocabulary to inform about or explain the topic.

Materials Needed

Each Student Needs:

  • Student Portfolio
  • Safety Goggles
  • Clipboard

The Class Needs:

Unit Plan Products

Building Supplies

Featured collection

1 of 11

Live, Online Training and 1:1 Support!

Estes Education has been a leader in STEM education for over 60 years. We know that STEM is a vital interdisciplinary topic that requires hands-on and inclusive learning. Explore these supporting materials to take learning to new heights!

Should you have need, you can meet with a member of Education team for FREE, 1:1 online support to learn rocketry basics, how to apply our curriculum, and discover unique teaching strategies. Our team is eager to answer your questions!

Get Support Now!

Learn About Model Rocket Safety!

Not sure how to safely launch a rocket with your group? Head over to our dedicated Safety instructions page for videos, support, and more!

How to Fly Safely!