Calculating the Number of Sub-Atomic Particles in an Atom
In this atoms worksheet, high schoolers compare the position, relative charge and relative mass of sub-atomic particles. Students define mass number and atomic number. This worksheet has 2 graphic organizers and 4 short answer questions.
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Hydrogen Atom as a Particle in a Box (NB)
How does an electron qualify as a particle in a box? It behaves like a wave and, when bound to an atom, has boundaries. Using this notion, the professor explains a quantum mechanical calculation for a hydrogen atom. Given the length of...
3 mins 11th - Higher Ed Science
New Review Thomson's Plum Pudding Model of the Atom
JJ Thomson discovered atoms are made up of things, which he called electrons. The video in the Vertasium playlist explains Thomson's model of the atom, known as the plum pudding model. It presents the new knowledge Thomson wanted to...
2 mins 9th - 12th Science CCSS: Adaptable
Particles and Waves: The Central Mystery of Quantum Mechanics
Help young physicists make a quantum leap in their understanding of matter with this short instructional video. Tracing the early work of Max Planck, Albert Einstein, and others, this resource explains the science behind the amazing fact...
5 mins 10th - Higher Ed Science CCSS: Adaptable
The 2,400-Year Search for the Atom
From ancient Greek philosophers to early American Quakers, people have sought to understand the composition of matter for millennia. Follow along with this video as it explores the long scientific journey that eventually led to the...
5 mins 5th - 12th Science CCSS: Adaptable
Radioactivity: Expect the Unexpected
Several radioactive concepts are explained with the help of animated atoms, complete with their own facial expressions. As physical science pupils watch, they learn about gaining or losing atomic particles, alpha and beta particles, and...
4 mins 8th - 12th Science CCSS: Adaptable