In this video Paul Andersen explains how chemical differs from physical change. In the laboratory macroscopic observations are used to infer changes at the particulate level. Evidence for chemical change include gas production, change...

Pirates love their coffee as much as they love their gold! But what does it take to get a good latte around here? Cookie the chef’s secret ingredient is cream, which he obtains by separating the components of milk. This lesson will...

In chemistry, there are two main types of changes - physical changes and chemical changes. Physical changes affect the shape, size, and form of a substance. Chemical changes changes occur when the particles of two or more substances are...

Scientists are looking for a new way to make antivenom and a new study poked some holes in a diagnostic test by making volunteers drink their own blood.

Mr. Andersen explains the difference between physical and chemical changes. A brief discussion of chemical reactions and equations is also included.

The video explains the three main states of matter, which are solids, liquids and gases, and their properties. The concept of state symbols is introduced to indicate what state chemicals or particles are in a reaction. The video also...

The video discusses how to measure entropy change in chemical reactions through an experiment using calorimetry. It explains the concepts of exothermic and endothermic reactions and how to calculate heat energy change. The equipment used...

Forces That Cause Change | Forces & Motion | Physics | FuseSchool



So what exactly is a force? A force is just a push or pull in a particular direction. Whenever you push or pull something, you are exerting a for

ce...

👉 Learn how to solve two step linear equations. A linear equation is an equation whose highest exponent on its variable(s) is 1. To solve for a variable in a two step linear equation, we first isolate the variable by using inverse...

Howcast - Learn how to do a no comply from competitive skateboarder Nate Cohen in this Howcast skateboarding video.

Pupil outcome: I can present information on a computer. Key learning points: - Information can be presented using a computer. - Information can be presented in different ways. - Not all information should be shared.

In quantum mechanics, it’s just as natural to go forward in time as going backwards. And if you look at a typical Feynman diagram, you can turn the diagram either way. Where does this transition from time symmetry...

What is dark energy? What is dark matter? Well, if we knew exactly we would have a nobel prize – we know that they exist though. So what do we know about those strange things? Check out THE NOVA PROJECT to learn more about dark energy:...

What's the difference between a physical change and a chemical change? What are elements, compounds, pure substances, and mixtures? So many definitions to learn! Don't worry, Professor Dave will take you through the details.

In this video, students will learn about different methods of separating substances in mixtures and solutions. They will explore physical changes in matter, the properties of mixtures and solutions, and the processes of evaporation,...

Learn the basics about the process of measuring the heat of chemical reactions or physical changes as well as heat capacity. What is Calorimeter? How does it measure heat? Find out more in this video!

If you stick water in the freezer, it will take a few hours to freeze into ice. How is it, then, that cold packs go from room temperature to near freezing in mere seconds? John Pollard details the chemistry of the cold pack, shedding...

Here, we perform a sample calculation for heat capacity in which we solve for heat (q) using q=smΔT.<br/>

Learn the basics about the process of measuring the heat of chemical reactions or physical changes as well as heat capacity. What is Calorimeter? How does it measure heat? Find out more in this video! This Open Educational Resource is...

This video explains the basics of alkanes, a family of organic compounds found in crude oil. The video highlights the common features of alkanes, including the presence of single covalent bonds and the maximum amount of hydrogen in an...

New research from the World Wide Fund for Nature and the University of Newcastle, Australia suggests that humans consume roughly 2,000 pieces of microplastics, or five grams of plastic, a week. <br/>

Howcast - Learn how to say "please speak more slowly" in Italian with this Howcast video.

Why does changing just one proton in the nucleus of an atom make a different element? How can a single proton make such a huge difference in an element’s properties?



The simple answer is: The number of...

NASA Goddard Space Flight Center scientist Andrew Sayer talks about how emissions from volcanoes can affect clouds. This video provides an overview of research published in the Journal of Atmospheric Chemistry and Physics. Research:...