Marshmallow Molecules Lab
Atoms and Molecules
Summary
After the Periodic Table of the Elements has been introduced, students will be introduced to the idea of atoms, molecules, and compounds. The physical manipulation of marshmallows (atoms) and toothpicks (bonds) will create a visual representation of the molecular structure of water. A second step requires students to create a second molecule using similar materials and using the Periodic Table as a reference point.
Learning Goals
Students will be able
to display and describe the concept of an atom.
Students will be able to display and describe the concept of a molecule and
bonds.
Students will use the Periodic Table of the Elements as a reference tool.
Students will create a second molecular model of their choice independently.
Context for Use
Before these
hands-on activities are introduced students should have a solid understanding of elements and the periodic table. They should also have been introduced to compounds and molecules. This activity would be perfect for the properties of water unit taught in 6th grade. It would also be useful in physical science when bonding is taught so students will be familiar with the structure of water and will use their prior knowledge to create a different molecule of their choice.
Subject: Atomic
Structure, Elements & Periodic Table
Resource Type: Activities: Classroom Activity
Grade Level: Middle (6-8)
(General Science/Chemistry/Properties of Water)
Description and Teaching Materials
(TEACHER NOTES)
1) Distribute several bowls of colored marshmallows. Purchase mixed bags of pastel colored
marshmallows (green, yellow, pink) and bags of white.
2) Distribute toothpicks to each table.
3) Distribute enough laminated copies of the Periodic Table of the Elements to
have as references at each work table. (see attached)
4) Create a key on the board with the students to define which color and size
of marshmallows represent which atoms or allow students to choose.
5) Use the attached worksheet and edit to fit your lesson.
References and Resources
Carrie Robatcek, Cold Spring Elementary, Cold Spring, Minnesota, based on an original activity from Janice VanCleave's 204 Sicky, Gloppy, Wacky & Wonderful Experiments, page 52.
Remixed from the original source
https://goopenva.org/courses/atoms-and-molecules-2/view
retrieved from Wikipedia Commons