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Alpha Decay
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Watch alpha particles escape from a polonium nucleus, causing radioactive alpha decay. See how random decay times relate to the half life.

Subject:
Mathematics
Science
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
John Blanco
Kathy Perkins
Noah Podolefsky
Ron LeMaster
Sam McKagan
Wendy Adams
Date Added:
07/21/2011
Remix
Atomic Structure and Counting Atoms Review-Remix by Rita Breeding
Conditional Remix & Share Permitted
CC BY-NC-SA
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I love this activity, and I think it is a great instructional resource for students to learn about atomic structure and counting atoms in compounds.  However, I would like to add a single modification.MODIFICATION:  Add the following question: How are atoms of one element different from the atoms of  a different element?   This resource is designed to accompany students notes, texts, and other instructional resources and provide a means to review what they have learned about atomic structure and counting atoms in compounds.

Subject:
Matter
Material Type:
Assessment
Author:
Rita Breeding
Date Added:
04/15/2021
Atoms and Molecules
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CC BY-NC-SA
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Both of these lessons are classroom activities that require students to build models that display understanding of atoms and molecules. One lesson is structured while the other is guided.

Subject:
Matter
Material Type:
Activity/Lab
Provider:
Science Education Resource Center (SERC) at Carleton College
Provider Set:
Pedagogy in Action
Author:
Carrie Robatcek
Date Added:
05/29/2019
Balancing Chemical Equations
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How do you know if a chemical equation is balanced? What can you change to balance an equation? Play a game to test your ideas!

Subject:
Mathematics
Science
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Chris Malley
Emily Moore
Kathy Perkins
Kelly Lancaster
Patricia Loeblein
Robert Parson
Date Added:
08/15/2011
Build an Atom
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CC BY
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Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!

Subject:
Mathematics
Science
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Jack Barbera
John Blanco
Kathy Perkins
Kelly Lancaster
Patricia Loeblein
Robert Parson
Sam Reid
Suzanne Brahmia
Date Added:
07/13/2011
CK-12 Physical Science Concepts for Middle School
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CK-12 Physical Science Concepts covers the study of physical science for middle school students. The 5 chapters provide an introduction to physical science, matter, states of matter, chemical interactions and bonds, chemical reactions, motion and forces, and the types and characteristics of energy.

Subject:
Matter
Material Type:
Textbook
Provider:
CK-12 Foundation
Provider Set:
CK-12 FlexBook
Author:
Jean Brainard, Ph.D.
Date Added:
11/01/2012
Copper Caper
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this activity, learners conduct an oxidation experiment that turns old pennies bright and shiny. Learners soak 20 dull, dirty pennies in a bowl of salt and vinegar for five minutes. They rinse half the pennies with water, then compare the rinsed pennies to the unrinsed after all pennies sit and dry for about an hour. Learners also observe what happens when they submerge a screw and nail in the liquid compared to a nail only half-way submerged.

Subject:
Matter
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Ellen Klages
Jason Gorski
Linda Shore
Pat Murphy
Date Added:
12/07/1997
Electroplating
Conditional Remix & Share Permitted
CC BY-NC-SA
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In this electrochemistry activity, learners will explore two examples of electroplating. In Part 1, zinc from a galvanized nail (an iron nail which has been coated with zinc by dipping it in molten zinc) will be plated onto a copper penny. In Part 2, copper from a penny will be plated onto a nickel.

Subject:
Matter
Material Type:
Activity/Lab
Provider:
Exploratorium
Author:
Don Rathjen
Date Added:
11/07/2004
The Evolution of the Atomic Model
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CC BY-NC
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As technology has evolved over time so has the understanding of the structure of the atom. This module focuses on how the model of the atom has changed over time using The Atomic Theory Timeline including the historical contributions of the scientists involved. This module was developed by Tracey Nipper as part of a Virginia Commonwealth University STEM initiative sponsored by the Virginia Department of Education.

Subject:
STEM/STEAM
Science
Matter
Material Type:
Lesson Plan
Author:
VCU STEM Project 3
VCU STEM Project 2
VCU STEM Project 1
Date Added:
09/30/2020
The Formation of Chemical Bonds
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CC BY-NC
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Students will explain that matter consists of atoms held together by electromagnetic forces and exists as different substances which can be utilized based on their properties. Students will be able to describe the behavior of atoms during a chemical change. Students will be able to distinguish covalent and ionic bonds.This module was developed by Patricia Kramolisch as part of a Virginia Commonwealth University STEM initiative sponsored by the Virginia Department of Education.

Subject:
STEM/STEAM
Science
Matter
Material Type:
Lesson Plan
Author:
VCU STEM Project 2
VCU STEM Project 1
VCU STEM Project 3
Date Added:
09/30/2020
Gas Model
Conditional Remix & Share Permitted
CC BY-NC-SA
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This highly visual model demonstrates the atomic theory of matter which states that a gas is made up of tiny particles of atoms that are in constant motion, smashing into each other. Balls, representing molecules, move within a cage container to simulate this phenomenon. A hair dryer provides the heat to simulate the heating and cooling of gas: the faster the balls are moving, the hotter the gas. Learners observe how the balls move at a slower rate at lower "temperatures."

Subject:
Force/Motion/Energy
Material Type:
Activity/Lab
Provider:
Exploratorium
Provider Set:
Science Snacks
Date Added:
06/04/2019
Let's Link Up!  Exploring Polymers | Cooking Up Science with Miss America
Unrestricted Use
CC BY
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Learn about polymers.  They are all around us. From the proteins we consume to the plastic cups we drink from, polymers dominate our lives and our earth. They package our snacks but can also pollute our oceans. But do you REALLY know what a polymer is? Join Camille Schrier, science lover and Miss America 2020, to explore the science of polymers by making some slimy sodium alginate worms, and biodegradable corn plastic that is good for the earth!!

Subject:
STEM/STEAM
Science
Matter
Material Type:
Activity/Lab
Lesson
Visual Media
Author:
Trish Reed
Date Added:
05/28/2021
Marshmallow Molecules Lab
Unrestricted Use
CC BY
Rating

As part of the introduction to the Periodic Table of the Elements, 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.

Subject:
Matter
Material Type:
Activity/Lab
Author:
Emily Harris
Date Added:
12/12/2019