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How Atoms Differ
physical science · MS-PS1-1
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How Do Uranium Deposits Form
earth and space science · MS-ESS3-1
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Parts of an Atom
physical science · MS-PS1-1+2
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The Idea of the Atom
physical science · MS-PS1-1
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Grade 5
Understanding Atoms
reading informational text
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Nucleus of the Atom
physical science · MS-PS1-1
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How Does Nuclear Energy Work
earth and space science · MS-ESS3-1
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Atomic Structure
physical science · MS-PS1-1+2
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Mass of a Proton
physical science · MS-PS1+3
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What Is the Charge of a Proton
physical science · MS-PS1+3
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Nuclear Fission
physical science · MS-PS1-1+1
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What are Valence Electrons
physical science
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Isotopes
physical science · MS-PS1-1
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How Many Valence Electrons Does Chlorine Have
physical science · MS-PS1-2+1
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How Many Valence Electrons Does Oxygen Have
physical science · MS-PS1-2+1
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Chemical Bonds
physical science · MS-PS1-1+2
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How Mining Affects the Land
earth and space science · NGSS 4-ESS3-1
$1.50
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Grades 5–8
What are Ions
physical science · MS-PS1-1
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Half-Life
science · MS-PS1-4
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What Charge Does a Neutron Have
physical science · MS-PS1+3
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Electric Charge
science · MS-PS2-3
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Radiocarbon Dating
physical science · MS-PS1-1+1
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Grades 3–8
What is an Ionic Bond
physical science
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Grades 6–8
How Minerals Form by Crystallization
earth and space science · MS-ESS2-1
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Grades 3–8
What is a Polar Covalent Bond
physical science
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How Many Neutrons Does Hydrogen Have
physical science · MS-PS1+3
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Covalent Bonds
physical science · MS-PS1-1
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Hydrogen Bonds
physical science · MS-PS1-1
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Do Protons and Electrons Have the Same Mass
physical science · MS-PS1+3
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Particle Model of Matter
physical science · MS-PS1-1+1
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How to Name Ionic Compounds
physical science
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What is Radioactivity
physical science
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What is Radioactive Decay
physical science
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Metallic Bonds
physical science · MS-PS1-1
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Chemical Bonding
physical science · MS-PS1-1
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Types of Radiation
physical science · MS-PS1-2
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Nuclear Power Plants
physical science · MS-PS3-4+1
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Nuclear Safety and Waste
physical science · MS-PS3-4+2
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Nuclear Fusion
physical science · MS-PS1-1+1
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Grades 5–8
Marie Curie and Radioactivity
physical science · CCSS RI.6.3
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What Produces Heat Inside Earth
earth and space science · MS-ESS2-1
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What is a Chemical Reaction
physical science
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How Carbon Moves Through Food Chains
earth and space science · MS-ESS2-1
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What Is Earth's Inner Core
earth and space science · MS-ESS2-1
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Are Stars on Fire
earth and space science · MS-ESS1-1
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