TED Talks
Mohammad Modarres: Why you should shop at your local farmers market
The average farmer in America makes less than 15 cents of every dollar on a product that you purchase at a store. They feed our communities, but farmers often cannot afford the very foods they grow. In this actionable talk, social...
The Business Professor
Manufacturing Overhead - Predetermined Overhead Rate
Assigning overhead costs in accounting is difficult. This video explains the use of a predetermined overhead rate when assigning manufacturing overhead in managerial accounting
Curated Video
Forming Iron Sulfide
We examine the different properties of iron and sulfur when they are mixed and when they are chemically combined. When iron and sulfur are mixed they retain their individual properties. When they react chemically to form iron sulfide...
Curated Video
Distillation of Ink
We use distillation to remove the water from ink. The ink is heated in a conical flask with a delivery tube running to a beaker. The water has a lower boiling point and so it evaporates before the ink. The water condenses as it travels...
Curated Video
Ferrofluids
We compare the properties of three iron mixtures: iron and water, iron and oil and a ferrofluid - a mixture of compounds containing iron and oil. First, we look at how iron filings behave when mixed with water and then oil. We then hold...
Curated Video
Extracting Lead
We discover how to extract lead from lead(II) oxide. We mix lead(II) oxide with charcoal powder and then heat the mixture using a Bunsen burner. It glows bright red as a reaction occurs and after a few minutes we are left with pure lead....
Professor Dave Explains
Liquid-Liquid Extraction
Separation techniques are important in chemistry, and they won't always be as easy as filtration. Sometimes we need to separate two compounds that are dissolved in the same solution. Often we can take advantage of a difference in...
Professor Dave Explains
Gravity Filtration and Vacuum Filtration
The first laboratory technique that we will learn together is a very simple one, filtration. This is how we separate a mixture of liquids and solids. There are two common ways a chemist will perform filtration, those being gravity...
Fuse School
Element, Mixture or Compound
Don't get mixed up about the differences between elements, mixtures, and compounds! Part one of a six-part series discussing these important classifications of substances illustrates simple tests one can perform to determine a material's...
GPB Television
Chemistry 203: Separation of Mixtures
Do not pass this resource by! Everything you need to teach the property of density,and the separation of mixtures is here: an educational video, several classroom handouts, and a laboratory exercise. The video is engaging, though a...
Yale University
Yale University: Organic Chemistry Lab Techniques: Extraction
A step-by-step tutorial for extracting a specific compound from a mixture of compounds. View procedure in full-length streaming video [13:04] or in separate segments.