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Product 11275

By: The Flinn Staff

In the Bean Bag Isotopes Activity Kit for physical science and chemistry, investigate the mass and relative abundance of three isotopes for the “bean bag” element, Bg, and then calculate Bg’s atomic mass.

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All atoms of the same element are not identical! This paradox of atomic structure is due to the existence of isotopes—atoms of the same element having different masses. In this hands-on activity, students investigate the mass and relative abundance of three isotopes for the “bean bag” element, Bg, and then calculate Bg’s atomic mass. Students will gain a clear understanding of the relationship between the atomic mass of an element and the mass of each isotope. Kit includes reproducible student handouts, detailed background information and teacher notes with sample data and answers to questions.

Complete for 30 students working in pairs.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Developing and using models
Planning and carrying out investigations
Analyzing and interpreting data
Using mathematics and computational thinking

Disciplinary Core Ideas

MS-PS1.A: Structure and Properties of Matter
HS-PS1.A: Structure and Properties of Matter

Crosscutting Concepts

Scale, proportion, and quantity
Systems and system models

Performance Expectations

MS-PS1-1: Develop models to describe the atomic composition of simple molecules and extended structures.
HS-PS1-3: Plan and conduct an investigation to gather evidence to compare the structure of substances at the bulk scale to infer the strength of electrical forces between particles.