- published: 12 Dec 2012
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A chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be chemical elements, chemical compounds, ions or alloys.
Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucrose). However, in practice, no substance is entirely pure, and chemical purity is specified according to the intended use of the chemical.
Chemical substances exist as solids, liquids, gases or plasma, and may change between these phases of matter with changes in temperature or pressure. Chemical reactions convert one chemical substance into another.
Chemical Substance Free Chemistry mp3 at http://edu.cg4u.net/Chemistry-mp3/ http://edu.cg4u.net/ http://www.cg4u.net Music: Day by Day Link http://www.freestockmusic.com/2012/easy-listening-production-music/free-easy-listening-production-music-day-by-day/ License: http://www.freestockmusic.com/license-agreement/ http://www.freestockmusic.com/
Here are the most toxic, dangerous, and lethal substances there. From face melting acids to deadly gasses that leave people disfigured. Subscribe to Talltanic http://goo.gl/wgfvrr 7. Batrachotoxin Another lethal substance found in nature, this one comes straight from a poisonous frog. This lethal cocktail of deadly toxins are used in poison darts and can kill its target within a matter of seconds. The strange part about how this toxin is found, is that the frog doesn’t produce this chemical itself. It comes from part of their diet of poisonous beetles. You are what you eat I guess. The poison paralyzes the muscles, leaving the victim immobile but still alive. Eventually the poison moves to the heart and triggers a heart attack. 6. Tetrodotoxin Also known as the pufferfish poison, this...
What is CHEMICAL SUBSTANCE? What does CHEMICAL SUBSTANCE mean? CHEMICAL SUBSTANCE meaning. A chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be chemical elements, chemical compounds, ions or alloys. Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucros...
They explode when you touch them. Even a millionth of a gram can kill you. They can even disable you with their horrifying smell. SciShow introduces you to give of the most dangerous chemicals in the world. Hosted by: Hank Green ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://pipeline.corante.com/archive...
In this video we will learn about how all matter is classified. We will learn about puresubstances, heterogeneous mixtures and homogeneous mxtures.
Top 10 Most Dangerous Substances on Earth Subscribe http://goo.gl/Q2kKrD TIMESTAMPS BELOW! There are a number of extremely hazardous materials in the world, and you should definitely try to avoid all of them. The most dangerous substances on Earth include chemical elements as common as Mercury and Lead, or famously toxic materials like ricin and sarin. WatchMojo takes a look at ten dangerous substances that will straight-up kill you, so you can stay safe. Top 10 Most Ridiculously Expensive Substances on Earth: https://youtu.be/wDPgQddCqeI 01:01 #10: Mercury 02:00 #9: Polonium-210 02:57 #8: Lead 04:04 #7: Asbestos 05:08 #6: Ricin 06:17 #5: Cyanide 07:22 #4: Caesium 08:21 #3, #2 & #1??? Special thanks to our user Luke Murphy for suggesting this idea! Check out the voting page at http:...
There are natural poisons that lurk in bacteria, plants, and fungi pretty much everywhere, and they're there for good reasons (according to the organisms that produce them) - but what is it about their chemical make up that makes them so poisonous? How do their toxins attack the human body with such deadly efficiency? Discover the answers to these and other questions as Hank talks about some of the most deadly natural substances in the world. Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Tardigrade Poster: http://vid.io/xom SciShow Mug: http://vid.io/xoa SciShow Shirt: http://vid.io/xog -- SciShow elsewhere on the internet: http://www.facebook.com/scishow http://www.twitter.com/scishow http://scishow.tumblr.com R...
You can support us on Patreon: https://www.patreon.com/periodicvideos See also Brady's Objectivity series: http://bit.ly/Objectivity (science treasures) Responding to another viewer question, some team members recall the most dangerous chemical they have handled. More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos Periodic Videos films are by video journalist Brady Haran
In chemistry, a chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e. without breaking chemical bonds. It can be solid, liquid, gas, or plasma. Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucrose). However, simple or seemingly pure substances found in nature can in fact be mixtures of chemical substances. For exam...
Chemical Substance Free Chemistry mp3 at http://edu.cg4u.net/Chemistry-mp3/ http://edu.cg4u.net/ http://www.cg4u.net Music: Day by Day Link http://www.freestockmusic.com/2012/easy-listening-production-music/free-easy-listening-production-music-day-by-day/ License: http://www.freestockmusic.com/license-agreement/ http://www.freestockmusic.com/
Here are the most toxic, dangerous, and lethal substances there. From face melting acids to deadly gasses that leave people disfigured. Subscribe to Talltanic http://goo.gl/wgfvrr 7. Batrachotoxin Another lethal substance found in nature, this one comes straight from a poisonous frog. This lethal cocktail of deadly toxins are used in poison darts and can kill its target within a matter of seconds. The strange part about how this toxin is found, is that the frog doesn’t produce this chemical itself. It comes from part of their diet of poisonous beetles. You are what you eat I guess. The poison paralyzes the muscles, leaving the victim immobile but still alive. Eventually the poison moves to the heart and triggers a heart attack. 6. Tetrodotoxin Also known as the pufferfish poison, this...
What is CHEMICAL SUBSTANCE? What does CHEMICAL SUBSTANCE mean? CHEMICAL SUBSTANCE meaning. A chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e., without breaking chemical bonds. Chemical substances can be chemical elements, chemical compounds, ions or alloys. Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucros...
They explode when you touch them. Even a millionth of a gram can kill you. They can even disable you with their horrifying smell. SciShow introduces you to give of the most dangerous chemicals in the world. Hosted by: Hank Green ---------- Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow Or help support us by subscribing to our page on Subbable: https://subbable.com/scishow ---------- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Thanks Tank Tumblr: http://thankstank.tumblr.com Sources: http://pipeline.corante.com/archive...
In this video we will learn about how all matter is classified. We will learn about puresubstances, heterogeneous mixtures and homogeneous mxtures.
Top 10 Most Dangerous Substances on Earth Subscribe http://goo.gl/Q2kKrD TIMESTAMPS BELOW! There are a number of extremely hazardous materials in the world, and you should definitely try to avoid all of them. The most dangerous substances on Earth include chemical elements as common as Mercury and Lead, or famously toxic materials like ricin and sarin. WatchMojo takes a look at ten dangerous substances that will straight-up kill you, so you can stay safe. Top 10 Most Ridiculously Expensive Substances on Earth: https://youtu.be/wDPgQddCqeI 01:01 #10: Mercury 02:00 #9: Polonium-210 02:57 #8: Lead 04:04 #7: Asbestos 05:08 #6: Ricin 06:17 #5: Cyanide 07:22 #4: Caesium 08:21 #3, #2 & #1??? Special thanks to our user Luke Murphy for suggesting this idea! Check out the voting page at http:...
There are natural poisons that lurk in bacteria, plants, and fungi pretty much everywhere, and they're there for good reasons (according to the organisms that produce them) - but what is it about their chemical make up that makes them so poisonous? How do their toxins attack the human body with such deadly efficiency? Discover the answers to these and other questions as Hank talks about some of the most deadly natural substances in the world. Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Tardigrade Poster: http://vid.io/xom SciShow Mug: http://vid.io/xoa SciShow Shirt: http://vid.io/xog -- SciShow elsewhere on the internet: http://www.facebook.com/scishow http://www.twitter.com/scishow http://scishow.tumblr.com R...
You can support us on Patreon: https://www.patreon.com/periodicvideos See also Brady's Objectivity series: http://bit.ly/Objectivity (science treasures) Responding to another viewer question, some team members recall the most dangerous chemical they have handled. More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos Periodic Videos films are by video journalist Brady Haran
In chemistry, a chemical substance is a form of matter that has constant chemical composition and characteristic properties. It cannot be separated into components by physical separation methods, i.e. without breaking chemical bonds. It can be solid, liquid, gas, or plasma. Chemical substances are often called 'pure' to set them apart from mixtures. A common example of a chemical substance is pure water; it has the same properties and the same ratio of hydrogen to oxygen whether it is isolated from a river or made in a laboratory. Other chemical substances commonly encountered in pure form are diamond (carbon), gold, table salt (sodium chloride) and refined sugar (sucrose). However, simple or seemingly pure substances found in nature can in fact be mixtures of chemical substances. For exam...
Deadliest Substances on Earth - Poison Documentary In biology, poisons are substances which cause disturbances to organisms, usually by chemical reaction or other activity on the molecular scale, when a sufficient quantity is absorbed by an organism. The fields of medicine (particularly veterinary) and zoology often distinguish a poison from a toxin, and from a venom. Toxins are poisons produced by organisms in nature, and venoms are toxins which are injected by a bite or sting (this is exclusive to animals). Note that the differentiator between venom and other poisons is the method of delivery. More Documentary Films:http://http://thetrendstoday.com/
This is the first video in a series that will cover the Amount of Substance topic in the AQA A-Level Chemistry spec. The video briefly looks at the mole and then how to utilise equations to work out concentrations and masses.
This webinar explains the screening process, its timelines, and the criteria for short listing. It also explains how registrants can influence the manual screening process by updating their dossiers and how they can obtain more information on common screening. The webinar also gives advice on how registrants should react to the informative letters sent by ECHA to all registrants of shortlisted substances. ECHA and Member State Competent Authorities are now in the fourth year of common screening. In late January every year, a number of substances are marked for manual screening by Member States. The selection is based on a set of algorithms to identify substances that may have hazardous properties and have the potential for exposure to humans or the environment.
The “Trigger field” from sci-fi to science Arthur Clark and Michael Kube–McDowell (“The Triger”, 1999) suggested the sci-fi idea about the direct transformation from a chemical substance into another by the action of a newly physical, “Trigger” field Karl Brohier, a Nobel Prize winner, who is a dramatic persona in the novel, elaborates a new theory, re-reading and re-writing Pauling’s “The Nature of the Chemical Bond” According to Brohier: “Information organizes and differentiates energy. It regularizes and stabilizes matter. Information propagates through matter-energy and mediates the interactions of matter-energy” “Alters it, scrambles it, overwhelms it, destabilizes it” Brohier adds One can suggest that any chemical substances and changes are fundamentally representable as quantum in...
A Chemical That Can Kill - Acid Documentary - Films An acid is a chemical compound whose aqueous remedies are identified by a sour taste, the capacity to turn blue litmus red, and also the capacity to react with bases as well as certain steels (like calcium) to develop salts. Liquid options of acids have a pH of less than 7. Non-aqueous acids are generally developed when an anion (negative ion) reacts with one or more positively billed hydrogen cations. A lesser pH implies a greater acidity, and thus a greater focus of favorable hydrogen ions in the remedy. Chemicals or compounds having the real property of an acid are claimed to be acidic. There are three common interpretations for acids: the Arrhenius definition, the Brønsted-Lowry definition, and the Lewis meaning. The Arrhenius inte...
Subscribe for more science videos :http://bit.ly/RiSubscRibe Help us transcribe this lecture: http://www.youtube.com/timedtext_video?v=0g8lANs6zpQ If you were able to make a substance change colour, or turn from a solid to a liquid, would that be magic? Andrew Szydlo leads us through a world of magical molecules and enchanting elements in this Ri event from Wednesday 23 April 2014. From a liquid that boils at room temperature to gases that are heavier than air, this family event is full of practical demonstrations of the magic of chemistry. Watch more science videos on the Ri Channel http://richannel.org The Ri is on Twitter: http://twitter.com/ri_science and Facebook: http://www.facebook.com/royalinstitution Sign upfor the latest science videos: http://richannel.org/newsletter
Thousands of chemicals are used in everyday products – in our water, our food and in the air we breathe. It’s the chemical soup of modern life and it’s virtually impossible to escape them. A large proportion of these chemicals are known as endocrine disruptors. They mimic our hormones and disrupt virtually every aspect of human health – beginning at our most vulnerable time, in the womb. Experts believe the rise in the use of industrial chemicals is linked to issues like lower IQ, cancer and reproductive problems. In this special edition of Catalyst, Dr Maryanne Demasi investigates the safety of these chemicals , and compares the level of chemicals in her own body with clean living convert and media personality Sarah Wilson. Is there adequate regulation and testing, or are we in the mid...
This video gives an overview of the Chemical Safety Assessment and Reporting tool, Chesar. It covers the following aspects: What is Chesar? Assessment workflow in Chesar Short demonstration of the tool Where you can find more information The video was recorded during ECHA's annual Stakeholders' Day conference on 24 May in Helsinki.
This chemistry-style "Yule Log" is designed to enjoy (maybe in the background) over the festive period --- The good people from Chromecast supported the making of this video --- Why not warm up your holidays by casting this YouTube Fireplace from your smartphone, tablet or laptop to your TV using Chromecast. Learn more at http://www.google.com/chromecast NOTES 1. Music by Alan Stewart - Alan played the music in one take while watching the video for the first time! Alan: http://www.youtube.com/user/AlanKey86 2. The ethanol demonstration was intended to show the liquid would burn without damaging the object we doused. We chose a currency note because everyone is familiar with it - knows what is made from, feels like, etc. And they would know it is not a trick substance. There was no inten...