chemistry
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The National Science Foundation (NSF) has joined forces with NBC Learn and the National Science Teachers Association (NSTA) to celebrate the International Year of Chemistry by creating "Chemistry Now"--a weekly, online video series that uncovers and explains the science of common, physical objects in our world and the changes they undergo every day. The series also looks at the lives and work of scientists on the frontiers of the 21st century... More . Part of a series on "Chance Discoveries" in chemistry, this video tells the story of lab work done in 1965 by DuPont chemist Stephanie Kwolek that unexpectedly produced Kevlar, a lightweight fiber five times stronger than steel.
Fiery explosions, beautiful reactions, and hilarious music videos are great reasons to be excited about chemistry. Here are some of our favorites. When flammable powders are dispersed in the air, they can explode. Throughout history, that phenomenon has lead to explosions in grain storage facilities.
Welcome to Reeko's Mad Scientist Lab! Your source for free science experiments for kids, parents, teachers, and children of all ages. Kick off your shoes, pull up a chair, make yourself comfortable, Did we mention that protective goggles are required? As you'll soon find out - nothing is ordinary around here.
BASF Server update The BASF server has been restructured. This may mean that the items you are looking for have been moved. Please use the sitemap or the BASF Search Engine to find the page you require and then update your bookmark. Aufgrund einer umfangreichen Umstrukturierung des BASF-Servers kann es vorkommen, dass die von Ihnen gesuchten Inhalte verschoben wurden.
Chemistry Interactive Review Activities These are not graded assignments. They are intended only as practice of concepts and vocabulary that are essential to your success in this course. Most of these interactive review activities work equally well in recent versions of Internet Explorer, Firefox, Google Chrome, and Safari. For most activities, each time you reload the activity, the problems will be in a different order, and the answers will be reshuffled! Most of these activities will launch in a new browser window.
Nitric acid acts upon copper to yield nitric oxide in an exothermic reaction. The expanding gas displaces water from another flask; actually bubbles in this set up. When the gas cools, the water is drawn back into the flask, dissolving the nitric oxide and forming a blue solution with the copper ions still there. Very cool reaction.
Most lessons represent approximately 70–80 minutes of class time. Some lessons are missing because there are no resources to post. This is true for student presentations, tests, field trips, study periods, videos, etc. All text references refer to Nelson Chemistry 11 . If you do not have access to this book, in many cases, page references from other textbooks can be substituted.
This is the classic version of Chembalancer that teaches you how to balance equations for the first time. To play it, just press the "Start Game" button above. To play the other versions, click here .
(See the Holiday Labs Contributed too) Fall '0 6 http://chemed.chem.purdue.edu/demos/ ~ P.M., Indiana
1. A higher atomic weight than the one on its left. For example, magnesium (atomic weight 24.3) is placed to the right of sodium (atomic weight 23.0): 2. Similar chemical properties to other elements in the same column - in other words similar chemical reactions. Magnesium, for example, is placed in the alkali earths' column: