Bozeman Science
AP Biology Lab 12: Dissolved Oxygen
Mr. Andersen demonstrates the azide-winkler method of dissolved oxygen analysis.
EarthEcho International
How to Measure Dissolved Oxygen
ENGAGE: Join Ashlan Gorse Cousteau and students from Earth Force in Alexandria, VA as they measure dissolved oxygen at Four Mile Run Creek. Learn how to use PASCO instruments to record quantitative results for DO as a measure of water...
National Parks Service
Acadia National Park - Floating Classroom: Dissolved Oxygen
These videos compliment the variety of water quality programs that occur in Acadia National Park. For teachers looking for good background information on water quality or those looking to attend the Floating Classroom field trip, this...
Encyclopaedia Britannica
BRITANNICA WIRE: Oceanic dissolved oxygen levels declining worldwide | Encyclopaedia Britannica
Ocean Dissolved Oxygen (O2) levels—which measure of how much oxygen is dissolved in ocean water—have been dropping at an alarming rate in every ocean around the globe. #BritannicaWire ~~~ Encyclopaedia Britannica Inspiring curiosity and...
SciShow
Is There Less Oxygen in the Winter Since Its Colder
Plants make oxygen using photosynthesis, but what happens to the air when those trees drop their leaves in winter?
SciShow
Is There Less Oxygen in the Winter Since It's Colder?
Plants make oxygen using photosynthesis, but what happens to the air when those trees drop their leaves in winter?
Curated Video
Water Treatment: Making Water Safe for Human Consumption
This video presents a lecture on water treatment, specifically on the processes involved in making water extracted from lakes and rivers fit for human consumption. The speaker discusses the different compounds and elements that might be...
msvgo
Oxygen and Carbon Dioxide
It explains that air is present in water and soil. It also talks about the interdependence of plants and animals for oxygen and carbon dioxide.
SciShow
The Sensor That Dissolves in Your Brain
In this week's SciShow News, we discuss two new types of sensors being developed. One tracks the content of certain molecules in your sweat while you exercise and the other is a brain implant that can be resorbed once it has finished its...
PBS
That Time The Ocean Lost (Almost) All Its Oxygen
New ReviewThis is the story of how our planet rescued itself from extreme conditions in the Cretaceous Period, at the cost of essentially suffocating the oceans for half-a-million years.
Crash Course
Solutions: Crash Course Chemistry
This week, Hank elaborates on why Fugu can kill you by illustrating the ideas of solutions and discussing molarity, molality, and mass percent. Also, why polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar...
MinuteEarth
How to Make a Seashell - Just Add Water
Why do shell building living creatures live near the surface of the ocean? Learn how chemistry creates a dissolving depth for calcium and determines where shell builders can live.
Curated Video
Transport of Substances in and out of Cells: Diffusion, Osmosis, and Active Transport
In this video, the concept of transport of substances into and out of cells is explained. The different ways in which this process occurs are discussed, including diffusion, osmosis, and active transport. The importance of surface area...
SciShow
Could Complex Life Survive on Mars - SciShow News
The water on Mars probably doesn't have much oxygen, but new models show that life doesn't need as much O2 as we thought. And NASA is sending a claw machine to the red planet!
Curated Video
Why Do Bubbles Form In A Glass Of Water?
Water especially the one which flows through the pipe contains atmospheric gases, such as nitrogen and oxygen, dissolved in it. As the glass filled with water sits out for a few hours, its temperature rises slightly (water gets warmer),...
Science ABC
Why Do Bubbles Form In A Glass Of Water?
Water especially the one which flows through the pipe contains atmospheric gases, such as nitrogen and oxygen, dissolved in it. As the glass filled with water sits out for a few hours, its temperature rises slightly (water gets warmer),...
FuseSchool
How To Extract Aluminium By Electrolysis
Aluminium is the most abundant metal on Earth. However, it is expensive because a lot of electricity is used to extract it. Bauxite is the aluminium ore. It is purified to yield aluminium oxide, which is a white powder. Aluminium is then...
Professor Dave Explains
Temperature and Gas Solubility
We know about solutions and solubility, but we have typically examined solid or liquid solutes dissolved in a liquid solvent. Did you know that gases can also be dissolved in liquids? Their solubilities depend heavily on temperature, so...
Curated Video
Capillary Action
Water is added to dry and bent matchsticks to let us see capillary action at work. The wood absorbs the water causing the matchsticks to straighten. Biology - Plants - Learning Points. Water is a polar molecule because the electrons are...
Curated Video
Why Is Carbon Dioxide Mixed In Cold Drinks And Beverages?
One of the most important factors when it comes to mixing any gas with a liquid is solubility, and carbon dioxide is highly soluble in water. In fact, it's the most soluble of the common, non-toxic gases with high solubility. To give you...
Science ABC
Why Is Carbon Dioxide Mixed In Cold Drinks And Beverages?
One of the most important factors when it comes to mixing any gas with a liquid is solubility, and carbon dioxide is highly soluble in water. In fact, it's the most soluble of the common, non-toxic gases with high solubility. To give you...
Curated Video
Electrolysis of Ionic Compounds: Molten and Aqueous Solutions
In this video, the process of electrolysis is discussed, which involves the splitting of an ionic compound into its constituent elements by passing an electric current through it. The video explains how electrolysis works for molten lead...
National Geographic
Deeper Look Inside Sunken Battleship Preserved Since Pearl Harbor Attack | National Geographic
New underwater footage and interior sampling reveal remarkable preservation inside the wreckage of the U.S.S. Arizona. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium...
National Geographic
Deeper Look Inside Sunken Battleship Preserved Since Pearl Harbor Attack | National Geographic
New underwater footage and interior sampling reveal remarkable preservation inside the wreckage of the U.S.S. Arizona. ➡ Subscribe: http://bit.ly/NatGeoSubscribe About National Geographic: National Geographic is the world's premium...
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