Category Archives: Chemistry

On Thursday, the Chemistry Concepts Class, taught by Ellen Kelm, had a special demonstration on Meals Ready to Eat from SFC Jeff Reisdorfer, Minnesota Army National Guard, Marshall, MN. With eighteen students gathered around the tables in the science laboratory, Reisdorfer explained that he had brought ready to eat meals that the class was going to heat and eat. The heaters in these meals, when combined with a small amount of liquid, create a gas that warms the food packages, Reisdorfer stated. The flameless ration heaters are made from powdered food grade iron, magnesium, and sodium. Reisdorfer cautioned the students on a number of things concerning the heaters including that the vapors released by an activated heater contains hydrogen, a flammable gas that can displace oxygen. He also cautioned about how hot the heater bag and the MRE pouch would be, and instructed the students to very carefully remove the MRE pouch from the bag. With these instructions he then taught the student about MREs and their many purposes. MREs are used for the military, space program, back packers and hikers, and a variety of other recreational uses, Reisdorfer stated. Historically, the military has had MREs in every form of … Continue reading →

Quantum Chemistry - Chemical Equivalence Physical chemistry microlecture deriving why chemically equivalent protons do not split each other on NMR spectra. By: TMP Chem … Continue reading →

Chemistry Practical Class XII To find out the Molecular mass of KMNO4 Part 1 By: Edusat Haryana … Continue reading →

Chemistry 3 5 3 Isomerism By: Paula Hay … Continue reading →

Five decades ago, The Odd Couple made its debut as a stage play. And now, two films, and four versions of the television show later, CBS is doing its own take on the story. The story of the CBS comedy is a familiar one: two divorced friends, Felix (Thomas Lennon) and Oscar (Matthew Perry), decide to move in together. Felix is neat and perhaps a bit uptight; Oscar is a slob. Naturally the two drive each other crazy, but Lennon and Perry's fun chemistry makes their dynamic pop. Series stars Perry and Lennon, and executive producers Garry Marshall who worked on a few of its previous incarnations and Bob Daily sat down with The Hollywood Reporter to talk about the show's modern retelling, getting a premium time slot, the show's evolution and more in a wide-ranging interview. See more Broadcast TV's Returning Shows 2015-16 Being put behind The Big Bang Theory is one of the best time slots on television. What was your reaction when you learned the show would air there? Perry: I think it's great. We know a lot of people will watch the first one, and we're really happy with the first one, so hopefully people will … Continue reading →

Chemistry - Unit 12 - Section 4 - Phase Changes Our main idea in this video is matter changes phase when energy is added or removed. You should be able to: Explain how the addition and removal of energy can cause a phase change. Interpret... By: Kingwood Science Tutorials … Continue reading →

You Me At Six - Contagious Chemistry at Manchester Academy 13/02/2015 By: Brittany Ross … Continue reading →

Chemistry - Unit 14 - Section 1 - Types of Mixtures Our main idea in this video is Mixtures can be either heterogeneous or homogeneous. You should be able to: Compare the properties of suspensions, colloids, and solutions. Identify types... By: Kingwood Science Tutorials … Continue reading →

Chemistry - Unit 12 - Section 3 - Liquids and Solids Our main idea in this video is the particles in solids and liquids have a limited range of motion and are not easily compressed You should be able to: Contrast the arrangement of particles... By: Kingwood Science Tutorials … Continue reading →

techniques check-out chemistry laboratory #2015scch109 #MU5705135 SCCH109 #2015scch109 #MU5705135. By: Phimmada Hatthakarnkul … Continue reading →