Bozeman Science
Atomic Models
In this video Paul Andersen explains how the atomic model has changed over time. A model is simply a theoretical construct of phenomenon and so when we receive new data we may have to refine our model. Ionization energy data resulted in...
Crash Course
Old & Odd: Archaea, Bacteria & Protists - CrashCourse Biology
Hank veers away from human anatomy to teach us about the (mostly) single-celled organisms that make up two of the three taxonomic domains of life, and one of the four kingdoms: Archaea, Bacteria, and Protists. They are by far the most...
Crash Course
Plant Cells: Crash Course Biology
Hank describes why plants are so freaking amazing - discussing their evolution, and how their cells are both similar to & different from animal cells.
Crash Course
Eukaryopolis - The City of Animal Cells: Crash Course Biology
Hank tells us about the city of Eukaryopolis - the animal cell that is responsible for all the cool things that happen in our bodies.
Curated Video
The Nucleus
New Review2 minute video describing a cell nucleus - for middle school science
Curated Video
Common Characteristics of Cells
New ReviewThis video compares different types of cells, including plant, animal, prokaryotic, and eukaryotic.
Curated Video
How to Understand Atoms
Howcast - The structure of atoms determines their physical and chemical properties. Using these guidelines, you can understand why some atoms are reactive and others are not.
Curated Video
Shocking
“Static Electricity” demonstrates how rubbing some materials together makes static electricity.
Curated Video
Drawing Bohr Models of Atoms and Ions - 3 easy steps!
While While the Bohr model of the atom is not the most accurate model we have today, it can help up show a lot of valuable information about the atom. Bohr models can show the protons and neutrons in the nucleus along with the number of...
Curated Video
Unveiling the SECRETS of Atomic Structure!
In this video, students will learn about atomic theory, atomic structure and how the atom is put together. This will include learning about the different subatomic particles, protons, neutrons and electrons, that make up the atom! This...
Curated Video
Ribosomes: structure and function
Ribosomes are cell organelles with a peculiar structure and function. In this video, will talk about many things ribosomes, especially their roles in protein production and the differences between the types of ribosomes.
Curated Video
Principal Quantum Number: The Key to Electron Shells
The principal quantum number (𝑛) is a fundamental parameter in quantum mechanics that determines the size and energy level of an electron's orbit within an atom. It is a positive integer that represents the main energy level or shell in...
Curated Video
Stern-Gerlach Experiment and spin quantum number : Revealing Electron Spin
The Stern-Gerlach experiment, which took place in 1922, was the most important proof that electrons have spin and that they have a spin quantum number. A stream of silver atoms was sent through an experiment using a magnetic field that...
Curated Video
Negative Energy: Understanding Hydrogen's Electron
In a hydrogen atom, the electron is bound to the nucleus, so its energy is negative. This shows that it is in a bound state. When there is negative energy, it means that the electron is stable. It is inside the atom because its negative...
Curated Video
Atomic number, Atomic mass, Mass number: What's the difference?
In this educational video, we will explore the differences between atomic number, atomic mass, and mass number in the world of chemistry.
Curated Video
Bohr's Atomic Model: Electrons in Orbit
In 1913, Niels Bohr proposed an atomic model that dramatically altered our comprehension of atomic structure by establishing a novel framework for describing the arrangement and behaviour of electrons within an atom. The purpose of...
Curated Video
Drawbacks of Rutherford's Theory
Rutherford's Nuclear Model: Limitations and Developments • Stability of Electrons in Orbit: The model failed to account for the continuous emission of electromagnetic radiation, indicating a flaw in the model. • Inability to Explain...
Curated Video
What are carbon-based molecules
Carbon-based molecules are the basis of life as we know it. Molecules like lipids, proteins, nucleic acids, and carbohydrates that make up all living things have one thing in common - carbon.
Curated Video
What the heck is an ELEMENT in chemistry?
In chemistry, we usually talk about atoms and molecules. When we introduce the term 'element', things get a little confusing. In this video, we will cover what an element is in chemistry and give you some examples.
Curated Video
Endoplasmic reticulum: structure and function
The endoplasmic reticulum is one important organelle in the cell responsible for many things including protein folding. In this video, we will cover its structure and function of the rough endoplasmic reticulum and smooth endoplasmic...
Curated Video
De Broglie vs Bohr: A Quantum Debate
Niels Bohr's model of the atom introduced the idea of quantised orbits for electrons. In these, electrons occupy stable energy levels and either give off or take in photons when they move between these levels. This model was able to...
Curated Video
De Broglie's Equation: Wave-Particle Duality
De Broglie's equation, formulated by Louis de Broglie in 1924, introduces the concept of wave-particle duality, suggesting that all matter exhibits both wave-like and particle-like properties. The equation is expressed as λ=h/p; λ is...