Click here to see more videos: https://alugha.com/LifesBiggestQuestions 80 percent of our universe is made up stuff that doesn’t emit light or energy, and can't be directly observed. This is called dark matter. Many scientists believe its there, because there are, how to put this, hints that it exi
In this video, we will look at the state symbols (s), (l), (g), and (aq) and what they represent in a chemical equation. For equations to be complete, we must also include the state symbol for each reactant and product. There are four possible states, each with their own unique state symbol. So
How do you work out how safe or dangerous a chemical or some other substance is? This week's Risk Bites takes a look at chemical safety, and estimating health risk from chemical exposure. This week's Risk Bites team: David Faulkner (post-production) Andrew Maynard (all the other stuff) Risk Bite
This is part 2 for our videos on giant chemical structures. Part 1 is here: https://bit.ly/336zmMx Giant ionic structures also have exceptionally high melting points. This is because the electrostatic interactions between the ions are very strong. Mg2+ and O2- ions have double the number of cha
Learn the basics about the differences between different chemical structures, including giant covalent, giant ionic and metallic structures. There are numerous materials and substances that possess giant chemical structures. Some are common: like the grains of sand on the beach; the microprocessors
Work through this practice GCSE / K12 question on atomic number, atomic mass and electronic configuration. Read the question, and hit pause if you want to try answering it yourself. Then hit play again to watch how the teacher solves it. This video is part of 'Chemistry for All' - a Chemistry Edu
Work through this practice GCSE / K12 question on atomic number, atomic mass and electronic configuration. Read the question, and hit pause if you want to try answering it yourself. Then hit play again to watch how the teacher solves it. Click here to see more videos: https://alugha.com/FuseScho
Learn the basics about the law of the conservation of mass, when learning about properties of matter. The Law of Conservation of Mass says that in chemical reactions no matter is lost or gained. The law of conservation of mass means that during chemical change there is no loss or gain of atoms. I
How do you know if the chemicals in the stuff you use and eat are safe? Only a small fraction of the thousands of chemicals in use today have been thoroughly tested for safety. Part of the problem is that how we test chemicals now is slow, expensive, and relies an awful lot on animal testing. How
The particle model, the 1st atomic model, is explained. It is based on a thought experiment and describes the structure of matter and the states of matter in an easy-to-understand way. Original: "Chemistry and biology - get it!" Original: German. All translations in this video have been done by th
Click here to see more videos: https://alugha.com/FuseSchool Learn the basics about plasma - the fourth state of matter, when learning about properties of matter. When ice is sufficiently heated, it melts to form water. It has therefore undergone a change of state – from a solid to a liquid. Recal
Learn the basics about balancing equations, as a part of chemical calculations. The law of conservation of mass states that no atoms are lost or made during a chemical reaction. There are different ways of arranging the atoms. Chemical reactions are about rearranging atoms. Chemical reactions can
