Sophia Learning
Sophia: Isotopes: Lesson 1
This lesson will define an isotope and explain what happens if the number of neutrons in an atom changes. It is 1 of 9 in the series titled "Isotopes."
Sophia Learning
Sophia: Isotopes: Lesson 2
This lesson will define an isotope and demonstrate how to determine the average atomic mass of an element. It is 2 of 9 in the series titled "Isotopes."
Sophia Learning
Sophia: Isotopes: Lesson 8
This lesson will define an isotope and demonstrate how to determine the average atomic mass of an element. It is 8 of 9 in the series titled "Isotopes."
Sophia Learning
Sophia: Isotopes: Lesson 7
This lesson will introduce isotopes, and explain how they differ from other elements. It will also show that some isotopes are unstable and emit particles and/or radiation. It is 7 of 9 in the series titled "Isotopes."
Sophia Learning
Sophia: James Chadwick
This lesson explains the discovery of the neutron and Chadwick's experimental process.
Sophia Learning
Sophia: Subatomic Particles: Lesson 3
This lesson will introduce the subatomic particles and explain where they are located and how they interact. It is 3 of 7 in the series titled "Subatomic Particles."
Sophia Learning
Sophia: Subatomic Particles: Lesson 4
This lesson will introduce the subatomic particles and explain where they are located and how they interact. It is 4 of 7 in the series titled "Subatomic Particles."
Sophia Learning
Sophia: Subatomic Particles: Lesson 6
This lesson will introduce the subatomic particles and explain where they are located and how they interact. It is 6 of 7 in the series titled "Subatomic Particles."
Sophia Learning
Sophia: Subatomic Particles: Lesson 7
This lesson will introduce the subatomic particles and explain where they are located and how they interact. It is 7 of 7 in the series titled "Subatomic Particles."
Sophia Learning
Sophia: Subatomic Particles: Lesson 5
Describe the difference between the subatomic particles, including their masses, locations, and charges. This lesson is 5 of 7 in the series titled "Subatomic Particles."
Sophia Learning
Sophia: Subatomic Particles: The Electron: Lesson 3
This lesson will explain that electrons are negatively charged particles with negligible mass and are found in pairs in orbitals surrounding the nucleus of an atom. It is 3 of 3 in the series titled "Subatomic Particles: The Electron."
Sophia Learning
Sophia: Subatomic Particles: The Proton: Lesson 2
This lesson will explain that protons are positively charged particles having a mass of one amu and are found in the nucleus of the atom. It is 2 of 3 in the series titled "Subatomic Particles: The Proton."
Sophia Learning
Sophia: The Atom: Lesson 2
This lesson will illustrate that an atom is mostly empty space and has a positively charged, massive core (containing both protons and neutrons called the nucleus) surrounded by negatively charged electrons. It is 2 of 3 in the series...
Sophia Learning
Sophia: Isotopes: Lesson 4
This lesson will define an isotope and demonstrate how to determine the average atomic mass of an element. It is 4 of 9 in the series titled "Isotopes."
Sophia Learning
Sophia: Isotopes: Lesson 5
This lesson will introduce isotopes, and explain how they differ from other elements. It will also show that some isotopes are unstable and emit particles and/or radiation. It is 5 of 9 in the series titled "Isotopes."
Sophia Learning
Sophia: Subatomic Particles: The Neutron: Lesson 2
This lesson will explain that neutrons are particles in the nucleus that have no charge and a mass of one amu. It is 2 of 3 in the series titled "Subatomic Particles: The Neutron."
Other
Fermi Laboratory:how Strong Is the Strong Force?
Use this site to learn about the four forces of nature. Also learn what determines the strength of a force. This question and answer site is a link of the Fermi National Accelerator Laboratory.
ClassFlow
Class Flow: Atomic Structure: Parts of the Atom
[Free Registration/Login Required] This flipchart defines the parts of the atom. It uses Activotes for assessment.
Other
Nuclear Twin: The Discovery of the Proton and Neutron
Trace the history of the discovery of protons and neutrons in this informative site.
Science4Fun
Science4 Fun: What Is Atom
Fun and interesting illustrated information on atoms including composition, elements, and history.
California State University
California State University: Proton, Electron, Neutron
An interesting and useful tool to practice recognition/calculation of atomic number, mass, and number of neutrons, electrons, etc. Can be used with all elements.
Math Science Nucleus
Math/science Nucleus: Electrons and the Hairy Monster
This animation discusses electrons and the properties of electrons in a storybook format featuring hairy monsters, strange rocks, and fun animations.
Other
Scientists Say Star Collision Caused Dinosaur Extinction
"Israeli scientists have a new theory on why the dinosaurs became extinct: cosmic radiation that bombarded the Earth following the collision of two neutron stars." This article discusses the details of the theory.