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Some basic concepts of chemistry
Some basic concepts of chemistry

Atoms, Ions and Molecules
Atoms, Ions and Molecules

... 2.2 - 2.3 Fundamental Chemical Laws/ Dalton’s Atomic Theory John Dalton (1808) “Father of Atomic Theory” Essentials of his theory. . . 1. An element is composed of tiny particles called atoms. All atoms of a given element show the same chemical properties. 2. Atoms of different elements have differ ...
The Mole - Cloudfront.net
The Mole - Cloudfront.net

... • Equal to the numerical value of the average atomic mass (get from periodic table) 1 mole of C atoms ...
Chapter 5 ppt
Chapter 5 ppt

... Chemical Reaction: Interaction between substances that results in one or more new substances being produced Example: hydrogen + oxygen  water ...
Chemical Equations Chemical Reaction: Interaction between
Chemical Equations Chemical Reaction: Interaction between

... Chemical Reaction: Interaction between substances that results in one or more new substances being produced Example: hydrogen + oxygen Æ water Reactants of a Reaction: Starting materials that undergo chemical change; written on the left side of the equation representing the reaction Products of a Re ...
Principles of Chemistry 1 and 2 Notes
Principles of Chemistry 1 and 2 Notes

... A theory that explains the existence of the single, double, and triple bonds. On the other hand, VSEPR model does not distinguish between single, double, and triple bonds. It treats all bonds equally, which reflects the major disadvantage of this model. - Valence bond theory is based on the hybridiz ...
Net ionic equation
Net ionic equation

... The forces holding an ionic compound together are the strong electrical attraction that exists between cations and anions. It is therefore somewhat surprising that ionic compounds will dissolve in water. The reason some ionic compounds will dissolve in water is because the water molecules have a par ...
Chapter 4 Power Point Quiz
Chapter 4 Power Point Quiz

... volume of 3.50 M H2SO4 is required to prepare 250.0 mL of 1.25 M H2SO4? a) b) c) d) ...
Oxidation
Oxidation

... Other nonmetals: the element closest to fluorine on the PT gets to keep its “usual” O.S. ...
CLUE - virtual laboratories
CLUE - virtual laboratories

Activation of Nitrous Oxide and Selective Epoxidation of Alkenes
Activation of Nitrous Oxide and Selective Epoxidation of Alkenes

... but proceeded in a linear fashion (Supporting Information), without indication of catalyst decomposition (IR). This is the first report of catalytic epoxidation with N2O with a Mn-based compound. There were only relatively small differences in the reactivity of the various alkenes; for example, the ...
File
File

... 5.2 Oxidation Numbers Oxidation number the apparent charge an atom would have if it gained or lost its bonding electrons Consider the example of sulfur dioxide, SO2. In sulfur dioxide, oxygen is more electronegative than sulfur. Since oxygen gains two electrons to form the oxide ion, O-2, in ionic c ...
File
File

... 8 Positive ions are formed when the vaporised atom or molecule is bombarded with fast-moving electrons. The kinetic energy of these electrons is great enough to cause the removal of an electron from the outermost orbital of the atom or of one of the bonding electrons in the molecule. e ...
Chapter 4 Carbon and the Molecular Diversity of Life
Chapter 4 Carbon and the Molecular Diversity of Life

... Chapter 4 Carbon and the Molecular Diversity of Life All organisms are composed mostly of chemical structures based on the element carbon. This chapter builds upon information and concepts introduced in Chapters 2 and 3 and extends the descriptions and analysis to more detailed consideration of the  ...
Qsp Ksp Qsp > Ksp
Qsp Ksp Qsp > Ksp

No Slide Title
No Slide Title

... The forces holding an ionic compound together are the strong electrical attraction that exists between cations and anions. It is therefore somewhat surprising that ionic compounds will dissolve in water. The reason some ionic compounds will dissolve in water is because the water molecules have a par ...
Unit3_Notes - Lesmahagow High School
Unit3_Notes - Lesmahagow High School

... efficiency. We have considered these in other topics but examples are: ...
- Angelo State University
- Angelo State University

... • In the examples we’ve seen, we have assumed that all of the reactions “go to completion” — that is, that all reactant molecules are converted into products. In real life, some product is almost always lost due to small amounts of contamination present in the glassware, impurities in the reactants, ...
Appendices and Glossary
Appendices and Glossary

... label approach for nearly all of the stoichiometric calculations in this book. A.3 MOLAR MASSES AND ATOMIC WEIGHTS OF THE ELEMENTS The number under the symbol of an element on the periodic table is the element’s atomic weight. It represents the “average atomic weight” or “average atomic mass” of the ...
Scientific Jury of the 30th International
Scientific Jury of the 30th International

... materials that your students use and produce. Students should of course also make themselves aware of any hazards associated with the chemicals that they will be using in any exercise and we encourage you to bring these to their attention. For our junior colleagues who will spend many hours over the ...
Electronics
Electronics

... Electronics is to with the use of semiconductors as well as the use of conductors and insulators. Semiconductors are the basis of devices such as transistors and diodes, heat sensors and light emitters, integrated circuits and many other devices. as its name suggests, a semiconductor has an electric ...
Chapter 4: Reaction Stoichiometry Reaction Stoichiometry
Chapter 4: Reaction Stoichiometry Reaction Stoichiometry

... 1) Make sure you have a balanced equation. 2) Calculate the molar masses of all compounds that you are interested in. 3) From each starting material, determine the amount of the desired product that can be formed. 4) Compare the two product amounts; the lower amount is the amount that will be formed ...
Deuterium fractionation of methylamine through atomic grain
Deuterium fractionation of methylamine through atomic grain

... Institute of Low Temperature Science, Hokkaido University, Japan Interstellar methylamine (CH3NH2) was first found in 1974 toward Sgr B2 and Ori A [1]. This finding is of interest in view of astrobiology because methylamine could be a precursor of amino acid in space [2]. Laboratory studies revealed ...
- Fairview High School
- Fairview High School

... Questions: For each statement, indicate whether it best describes solid (s), liquid (l) or gas(g). A statement may apply to more than one phase. 1) Very little empty space between atoms. 2) This phase is mostly empty space; very few atoms are present in the picture. 3) This phase is has very strong ...
Congratulations! You have signed up for AP Chemistry for this year
Congratulations! You have signed up for AP Chemistry for this year

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Hypervalent molecule

A hypervalent molecule (the phenomenon is sometimes colloquially known as expanded octet) is a molecule that contains one or more main group elements formally bearing more than eight electrons in their valence shells. Phosphorus pentachloride (PCl5), sulfur hexafluoride (SF6), chlorine trifluoride (ClF3), and the triiodide (I3−) ion are examples of hypervalent molecules.
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