Crash Course
Alkanes - Crash Course Organic Chemistry
Alkanes are kind of the wallflowers of organic chemistry, but they still have important functions in the world around us. In this episode of Crash Course Organic Chemistry we’re building our knowledge of organic molecules by learning all...
Bozeman Science
Concept 4 - Systems and System Models
In this video Paul Andersen explains how systems can be used to understand phenomenon in science and create better designs in engineering. He starts by defining the characteristics of a system and describes how system models can be used...
Crash Course
Climate Science: Crash Course History of Science
Scientists tend to be careful and resistant to big claims. So evidence for the possible end of the living world took a while to be seen as such. In this episode of Crash Course History of Science, Hank talks to us about where Climate...
Bozeman Science
Covalent Network Solids
In this video Paul Andersen explains how covalent network solids form elementally (like graphite) or by combining multiple nonmetals (like quartz). Covalent network solids contain elements from the carbon group because they have four...
SciShow
Hydrogen Bonding…but With Carbon | Great minds: June Sutor
Proteins, and by extension our bodies, depend on the fact that atoms are arranged, spaced, and linked to each other in specific ways. And thanks to June Sutor, we have a better understanding of how those atoms come together and interact...
SciShow
4 Ways to Date an Archaeological Site
From wasps nests to nuclear reactors. Here are just a few clever ways archeologists figure out how old something is.
Bozeman Science
What is Modeling Instruction?
In this video Paul Andersen explains how modeling instruction can be used in the science classroom. Instead of presenting a model for the students the teacher presents and experience or experiment and the students develop the model.
Crash Course
The History of Life on Earth - Crash Course Ecology
With a solid understanding of biology on the small scale under our belts, it's time for the long view - for the next twelve weeks, we'll be learning how the living things that we've studied interact with and influence each other and...
Crash Course
What Is Organic Chemistry - Crash Course Organic Chemistry
Organic chemistry is pretty much everywhere! In this episode of Crash Course Organic Chemistry, we’re talking about the amazing diversity among organic molecules. We’ll learn about the origins of organic chemistry, how to write Lewis...
Bozeman Science
Drawing Lewis Dot Diagrams
Mr. Andersen shows you how to draw Lewis Dot Diagrams for atoms and simple molecules.
Bozeman Science
Fossil Fuels
In this video Paul Andersen explains how fossil fuels are formed when organic material is heating and squeezed in an anaerobic environment. Formation, extraction, advantages, and disadvantages are discussed for coal, petroleum and...
Bozeman Science
Metallic Solids
In this video Paul Andersen explains how metallic solids form when delocalized electrons hold the positive nuclei in an electron sea. This model helps to explain the properties of metals like conductivity, shiny appearance, malleability,...
SciShow
Tiny Extremophiles Living in Rocks!
In freezing cold sand, a burning hot mine, or even inside solid rock _ these extremophiles live anywhere that you wouldn't want to live. What are they? How can they live in such extreme places?
SciShow
The Earth's Internet: How Fungi Help Plants Communicate
Plants have their own interconnected networks that allow them to communicate with each other, sometimes over considerable distances!
PBS
When Giant Fungi Ruled
420 million years ago, a giant feasted on the dead, growing slowly into the largest living thing on land. It belonged to an unlikely group of pioneers that ultimately made life on land possible -- the fungi.
TED-Ed
The material that could change the world... for a third time | TED-Ed
Today roads, sidewalks, bridges, and skyscrapers are made of a material called concrete. There's three tons of it for every person on Earth. It's also played a surprisingly large role in rising global temperatures over the last century....
Bozeman Science
Plant Nutrition and Transport
Paul Andersen explains how nutrients and water are transported in plants. He begins with a brief discussion of what nutrients are required by plants and where they get them. He shows you dermal, vascular and ground tissue in monocot and...
Crash Course
The Creation of Chemistry - The Fundamental Laws: Crash Course Chemistry
Today's Crash Course Chemistry takes a historical perspective on the creation of the science, which didn't really exist until a super-smart, super-wealthy Frenchman put the puzzle pieces together - Hank tells the story of how we went...
TED-Ed
TED-ED: The law of conservation of mass - Todd Ramsey
Everything in our universe has mass - from the smallest atom to the largest star. But the amount of mass has remained constant throughout existence even during the birth and death of stars, planets and you. How can the universe grow...
SciShow
A History of Earth's Climate
Earth had a climate long before we showed up and started noticing it and it's influenced by a whole series of cycles that have been churning along for hundreds of millions of years. In most cases those cycles will continue long after...
Bozeman Science
What is DNA?
Paul Andersen describes the molecular structure of DNA. He describes the major parts of a nucleotide and explains how they are assembled into a nucleic acid. The nitrogenous base, deoxyribose sugar and phosphate group make up a single...
Bozeman Science
The Molecules of Life
Paul Andersen describes the macromolecules that make up living organisms. He starts with a brief description of organic chemistry and the importance of functional groups. He also covers both dehydration and hydrolysis in polymerization....
Bozeman Science
Chemical Bonds: Covalent vs. Ionic
Mr. Andersen shows you how to determine if a bond is nonpolar covalent, polar covalent, or ionc.
Crash Course
Pollution: Crash Course Ecology
Hank talks about the last major way humans are impacting the environment in this penultimate episode of Crash Course Ecology. Pollution takes many forms - from the simplest piece of litter to the more complex endocrine distruptors - and...