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יסודות הטבלא המחזורית בוידיאו

יסודות הטבלא המחזורית בוידיאו
Tables charting the chemical elements have been around since the 19th century - but this modern version has a short video about each one. We've done all 118 - but our job's not finished. Now we're updating all the videos with new stories, better samples and bigger experiments. Plus we're making films about other areas of chemistry, latest news and occasional adventures away from the lab. We've also started a new series - The Molecular Videos - featuring our favourite molecules and compounds. All these videos are created by video journalist Brady Haran, featuring real working chemists from the University of Nottingham.

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valent Network Structures These are giant molecular lattice structures. This implies that strong covalent bonding holds their atoms together in a highly regular extended network. The bonding between the atoms goes on and on in three dimensions. Melting requires the separation of the species comprising the soild state, and boiling the separation of the species comprising the liquid state. BioEd Online David Eagleman, PhD, author of the New York Times bestseller, Incognito: The Secret Lives of the Brain, provides an extraordinary look at the human brain and current neuroscience research. In this engaging series of videos, Dr. Eagleman explains the basics of brain function, and describes how this extremely complex, often misunderstood organ defines who we are. Dr.

Periodic Table Battleship I have posted a lot about Chemistry lately. My oldest has been studying it and really enjoying it. I love his science-y mind! Today I have a really fun & simple chemistry game to share. We played Periodic Table Battleship!

Giant covalent structures lattices explaining properties of diamond graphite silica what is the bonding and structure of carbon allotropes Buckminsterfullerenes fullerenes silicon dioxide gcse chemistry notes igcse A level GCE AS A2 Level CHEMICAL BONDING Part 4 Covalent Bonding – giant covalent structures and polymers Doc Brown's Science–Chemistry Chemical Bonding GCSE/IGCSE/O/AS/A2 Level Revision Notes DIAGRAMS of GIANT COVALENT STRUCTURES and their PROPERTIES EXPLAINED – This section describes how covalent bonds can lead to large linear ('1D') giant molecular covalent structures e.g. thermoplastic polymer macromolecules, two dimensional ('2D') structures like graphite layers and three dimensional ('3D') giant covalent structured molecules like diamond, silica and thermosetting plastics. The physical properties of these structures are described and explained using models of their molecular structure. These notes on giant covalent structures are designed to meet the highest standards of knowledge and understanding required for students/pupils doing GCSE chemistry, IGCSE chemistry, O Level chemistry, KS4 science courses and a basic primer for AS/A Level chemistry courses. Part 1 Introduction – why do atoms bond together?

BUILDING BIG: Home Page Explore large structures and what it takes to build them with BUILDING BIG™, a five-part PBS television series and Web site from WGBH Boston. Here are the main features of the site: Bridges, Domes, Skyscrapers, Dams, and Tunnels. The Labs Try your hand at our interactive engineering labs. Resource: Everyday Exploration of Chemical Compounds InfoGraph Cards A resource blog, developed by a UK-based Newly Qualified Teacher, is gaining respectable notoriety with teachers and parents alike due to the accessibility of resource/revision cards (or can be printed out as posters) designed to help develop understanding of chemistry and chemical processes. Speaking to UKEdChat, the author of the resource said, “The site started off the back of a series of posters I made for my classroom to showcase the different groups of elements in the Periodic Table. A few people mentioned that they’d like copies, so I created the site in order to share the files for free. It pretty much escalated from there – a lot of people on twitter downloaded the files and used them in their own classrooms, and I also created a set of teaching versions of the elements graphics, with information missing, to be used in research tasks.” Since they proved popular, I continued making graphics on different facets of chemistry, as it’s a process I really enjoy anyway.

Chemistry If you have an interest in anything in the world, then you have an interest in chemistry because everything you hear, see, taste, smell and touch involves chemistry and chemicals. Our ability to understand the chemical make-up of things and chemical reactions has led to everything from modern food and drugs to plastics and computers. The Center for Sustainable Polymers focuses on economical, bio-based sources for plastics NSF's Center for Selective C-H Functionalization hopes to trim the cost and environmental impact of... Researchers have succeeded in creating the largest phytoplankton bloom in a wave flume in history as part of a... From ocean microbes to clouds and climate--it all comes down to microscopic particles at the Center for Aerosol Impacts... Creative Chemistry - Anodising Aluminium Student notes There are four stages, preparing the aluminium, preparing the anodising cell, anodising, and dyeing. Preparing the aluminium Using the scissors, cut out a piece of aluminium from your can. Watch out for sharp edges! About 5 cm x 2 cm is OK.

Interactive Science Software - Atom Builder Atom Builder allows students to investigate the properties of elements from the periodic table. Students can use this software to lookup the atomic structure of elements and change the number of protons, neutrons and electrons to produce different atoms. This is a free and complete version of LJ Create's popular Atom Builder app. You can use this software for any educational purposes. This version of the software does however have to be loaded using this web page. Some of The Best YouTube Channels for Physics and Chemistry Teachers July 11, 2015 Science in general is all about understanding how the world around us functions. It investigates the laws governing the internal workings of the universe and attempts to prove or disprove theories and assumption pertaining to it. For students, understanding scientific phenomena is integral to their overall intellectual and cognitive growth. It thrusts them into a world of exploration and problem solving and, most important of all, it unleashes their creativity and satiates their curious and probing minds. In today's post, we are sharing with you some excellent YouTube channels particularly curated for chemistry and physics teachers.

Basic Chemistry: Atoms and Ions Atoms Atoms are the basic unit of chemistry. They consist of 3 smaller things: Protons - these are positively charged (+) Electrons - these are negatively charged (-) Neutrons - these have no charge These 3 smaller particles are arranged in a particular way. 29jun_experiman The fourth competition, linked to the chat and video "Science: where can it take you?" is open from 29 May 2013 until 29 June 2013. This time the competition will be for teachers and for students. Teachers: are invited to submit a lessons plan (one lesson, or a sequence of lessons) using the video "Science: where can it take you?". Thus, the lesson plan should show how the video could be used in the classroom.

IGCSE Chemistry: Condensation Polymerisation-Nylon Note: This is for SINGLE SCIENCE. How to make nylon: (he uses a diamine which is one of the monomers, but doesn't use a dicarboxylic acid so just beware of that. the video's just essentially to show you what it looks like to make nylon, stuff about the monomers are below) Reviewing addition polymerisation vs. condensation polymerisation. This is a really good video to show you the difference and to explain it. It may not be about nylon, but the concept is essentially the same and it also loses a water molecule in the process, which is the same as when nylon is produced. 5.17 recall that nylon is a condensation polymer

PTOV is created by video journalist Brady Haran working with chemists at The University of Nottingham. by mrpearl Mar 30

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