TED-Ed
TED-ED: The accident that changed the world - Allison Ramsey and Mary Staicu
In 1928, scientist Alexander Fleming returned to his lab and found something unexpected: a colony of mold growing on a Petri dish he’d forgotten to place in his incubator. And around this colony of mold was a zone completely and...
SciShow
What's the Difference Between Baking Powder and Baking Soda
Powder vs. Soda: an important distinction!
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...
TED-Ed
TED-ED: What causes body odor? - Mel Rosenberg
Most of us don't need more than one whiff to identify that generally unpleasant, characteristic smell we call body odor. But it's a surprisingly complex phenomenon, influenced by our genetic makeup, age, diet, and hygiene. So what is...
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.
Curated Video
Can Marijuana Help Chemotherapy?
Howcast - Learn how marijuana can help patients going through chemotherapy in this Howcast video.
Curated Video
Marijuana & Cancer
Howcast - Learn about marijuana use and cancer in this Howcast video.
Curated Video
Can Marijuana Usage Cause Cancer?
Howcast - Find out if marijuana use can give you cancer in this Howcast video.
Curated Video
Alternative Medicine for Erectile Dysfunction
Howcast - Learn about alternative medicine for erectile dysfunction in this Howcast video.
Curated Video
7 Cool Facts about Waxy Monkey Frogs
Howcast - Learn seven cool facts about waxy monkey frogs from reptile and amphibian expert Jungle Bob in this Howcast video.
Curated Video
How to Tea-Tox
Howcast - A nice, hot cup of tea isn't just soothing; some varieties have health and diet benefits. See which brew might be right for you.
Curated Video
Creating a new word
Pupil outcome: I can create a new word using specific language change techniques. Key learning points: - Blending is when words are 'chopped up' and put together. - Compounds are when two words are merged (sometimes using a hyphen). -...
Curated Video
Ames Test
Ames test was developed by Bruce N. Ames in 1970s to test for determining if the chemical is mutagens. Ames test it is a biological assay to assess the mutagenic potential of chemical compounds. It utilizes bacteria to test whether a...
Curated Video
Ames Test for the Detection of Potential Mutagen
The Ames test, developed by Bruce Ames in the 1970s, is a bacterial reverse mutation assay used to assess whether a chemical is a mutagen by observing its ability to induce reverse mutations in auxotrophic bacterial strains (e.g.,...
Curated Video
Using ROMAN NUMERALS to name Ionic Compounds w/ a Transition Metal in Chemistry!
Transition metals are elements in the d orbital. The reason these are unique is that they do not have 1 set charge they become when they become an ion like elements in the s and p orbital. Elements in the d orbital, or our transition...
Curated Video
Why do covalent compounds share electrons?
A covalent compound forms when electrons are shared and this will happen when you have 2 nonmetals, or 2 anions, bonding together. The reason these elements share their electrons is because they have a small difference in...
Curated Video
Elements and Compounds - what's the difference?
In this video, we're going to talk about the difference between elements and compounds. We'll cover the basics of chemistry, and explain the differences between elements and compounds. If you're new to the subject of chemistry, or if...
Curated Video
Molecules, compounds and types of chemical bonds
What is the difference between a molecule and a compound? What are the main types of chemical bonds? In this video, we will be answering those questions and more.
Curated Video
Writing Formulas for Covalent Compounds
A covalent compound is formed when 2 nonmetals bond together. When we have a covalent compound we have to use a specific set of naming rules. The first rules is that the first element keeps its name. The second rule is that the second...
Curated Video
Naming Covalent Compounds the EASY way | How to pass Chemistry
This videos will cover how to name covalent compounds. It is important to remember that we have to use prefixes when we name covalent compounds. Covalent bonds, or compounds, form between 2 nonmetals, or 2 anions. In a covalent bond the...
Curated Video
Understanding Frenkel Defects
Switching Locations: Understanding Frenkel Defects In the event that an ion is absent from its lattice site, resulting in a vacancy or a hole in that location, and it occupies an interstitial site, the compound will be able to maintain...
Curated Video
Chemistry - Molecular and Empirical Formulas Explained - What's the difference?
The molecular formula of a compounds gives you the actual formula while the empirical formula gives you a simplified version of the molecular formula. Both formulas are important in chemistry and they both gives us valuable information....
Curated Video
Writing Ionic Formulas
Writing formulas for ionic compounds is all about canceling out the charges! An ionic compound is formed between a cation and an anion, or a positive and negative charge so the goal is to always get the charges to add up to zero! In this...
Curated Video
Revolutionizing Air Pollution Monitoring and Breath Analysis: Leicester University's Breakthrough Device
Scientists at Leicester University have developed a sensitive device that can rapidly analyze chemical compounds in the air and human breath. This technology has the potential to revolutionize air pollution monitoring, as well as have...