Category Archives: Chemistry

New Fundraising Campaign Underway We, the junior faculty of the Department of Chemistry, have launched a fundraising effort specifically aimed at supporting the Chemistry graduate students. We see great promise in our graduate students and, in order to improve recruitment and retention, their merits must be better supported. As such, we have each donated to one of two existing endowed funds aimed at increasing merit-based funding opportunities for graduate student summer research. Front: Prof. Sam Pazicni and Prof. Meg Greenslade Back: Prof. Erik Berda, Prof. Leila Deravi and Prof. Gonghu Li These funds include: the Clarence L. and Helen M. Garland Grant Fellowship fund and Mary Zoukis Papastavros 60 Chemistry fund. Our ultimate goal is an increased ability to provide adequate and competitive compensation to all of our graduate students. We hope you can contribute as well! To support our Chemistry graduate students through either of these funds, please visit our giving page. The Chemistry Department now has a Facebook page! For more information and real-time updates on what's happening in the Chemistry Department, "like" us on Facebook. Click the image to go to our Facebook page. View original post here: Chemistry - University of New Hampshire … Continue reading →

The history of chemistry represents a time span from ancient history to the present. By 1000 BC, civilizations used technologies that would eventually form the basis to the various branches of chemistry. Examples include extracting metals from ores, making pottery and glazes, fermenting beer and wine, extracting chemicals from plants for medicine and perfume, rendering fat into soap, making glass, and making alloys like bronze. The protoscience of chemistry, alchemy, was unsuccessful in explaining the nature of matter and its transformations. However, by performing experiments and recording the results, alchemists set the stage for modern chemistry. The distinction began to emerge when a clear differentiation was made between chemistry and alchemy by Robert Boyle in his work The Sceptical Chymist (1661). While both alchemy and chemistry are concerned with matter and its transformations, chemists are seen as applying scientific method to their work. Chemistry is considered to have become an established science with the work of Antoine Lavoisier, who developed a law of conservation of mass that demanded careful measurement and quantitative observations of chemical phenomena. The history of chemistry is intertwined with the history of thermodynamics, especially through the work of Willard Gibbs.[1] The earliest recorded metal employed by … Continue reading →

Even though matter can be found all over the Universe, you will only find it in a few forms on Earth. We cover five states of matter on the site. Each of those states is sometimes called a phase. There are many other states of matter that exist in extreme environments. Scientists will probably discover more states as we continue to explore the Universe. What makes a state of matter? It's about the physical state of the molecules and atoms. Think about solids. They are often hard and brittle. Liquids are fluidy, can move around a little, and fill up containers. Gases are always around you, but the molecules of a gas are much farther apart than the molecules in a liquid. If a gas has an odor, youll be able to smell it before you can see it. The BEC is all about atoms that are even closer and less energetic than atoms in a solid. So you're asking, "What is a chemical change?" Let's start with a glass of pure water. If the formula of water were to change, that would be a chemical change. If you could add a second oxygen atom to a water molecule, you … Continue reading →

If you're seeing this message, it means we're having trouble loading external resources for Khan Academy. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. To log in and use all the features of Khan Academy, please enable JavaScript in your browser. Videos on chemistry (roughly covering a first-year high school or college course). Atomic structure, atomic numbers, atomic mass, moles, ions (eventually), compounds (eventually) We are now going to delve into the heart of chemistry. We learn ways of representing chemical molecules and how molecules react. To do this, we'll even think about "how many" of a molecule we have using a quantity called a "mole". Bohr model, absorption, emission spectrum, quantum numbers, electron configurations Classification of elements, atomic radii, ionic radii, ionization energy, electron affinity Ionic bonds, metallic bonds, covalent bonds, electronegativity, VSEPR, hybridization Gas laws (eventually), ideal gas equation, Dalton's law (eventually), kinetic molecular theory (eventually) Read more: Chemistry | Khan Academy … Continue reading →

This is an online interactive periodic table of the elements. Click on an element symbol in the periodic table to get facts for that element. Printable periodic tables and a list of elements by increasing atomic number are also available. 1 IA 1A 18 VIIIA 8A 1 H 1.008 2 IIA 2A 13 IIIA 3A 14 IVA 4A 15 VA 5A 16 VIA 6A 17 VIIA 7A 2 He 4.003 3 Li 6.941 4 Be 9.012 5 B 10.81 6 C 12.01 7 N 14.01 8 O 16.00 9 F 19.00 10 Ne 20.18 11 Na 22.99 12 Mg 24.31 3 IIIB 3B 4 IVB 4B 5 VB 5B 6 VIB 6B 7 VIIB 7B 8 9 VIII 8 10 11 IB 1B 12 IIB 2B 13 Al 26.98 14 Si 28.09 15 P 30.97 16 S 32.07 17 Cl 35.45 18 Ar 39.95 19 K 39.10 20 Ca 40.08 21 Sc 44.96 22 Ti 47.88 23 V 50.94 24 Cr 52.00 25 Mn 54.94 26 Fe 55.85 27 Co 58.47 28 Ni 58.69 29 Cu 63.55 30 Zn 65.39 31 Ga 69.72 32 Ge 72.59 33 As 74.92 34 Se 78.96 35 Br 79.90 36 Kr 83.80 37 Rb … Continue reading →

Hydrogen Ballon Chemistry Experiment Slo Mo 100x A 100x slo mo video taken using iPhone 6 of a hydrogen ballon chemistry experiment. By: Sam Mason … Continue reading →

Chemistry test prep part 2 By: Isacc Brown … Continue reading →

Chemical Fire in AP Chemistry Don't try this at home. It's dangerous. By: Bishop O'Dowd High School … Continue reading →

Chemistry Video Lecture 1 By: … Continue reading →

Chemistry Video Lecture 4 By: … Continue reading →