Chemical Equations and Reactions
... – Some form of energy is given off by the reaction • Heat given off causes reaction mixture to feel hot • Examples-burning wood, dynamite explosion ...
... – Some form of energy is given off by the reaction • Heat given off causes reaction mixture to feel hot • Examples-burning wood, dynamite explosion ...
Review for SNC 2P Chemistry Unit(SPRING 2014)
... (c) A family of elements that includes sodium and potassium ___________________________ ...
... (c) A family of elements that includes sodium and potassium ___________________________ ...
Chemical Equations and Reactions
... Balancing: 1) write out word equation is the problem is a written 2) balance atoms one at a time 3) first balance atoms that are combined into a formula 4) then balance polyatomic ions 5) Balance H atoms and O atoms after all other elements are balanced 6) Check the number for all atoms on both side ...
... Balancing: 1) write out word equation is the problem is a written 2) balance atoms one at a time 3) first balance atoms that are combined into a formula 4) then balance polyatomic ions 5) Balance H atoms and O atoms after all other elements are balanced 6) Check the number for all atoms on both side ...
Polyatomic Ions (Memorize for Wednesday, January 31
... CHEMICAL NOMENCLATURE Oxidation Numbers (similar to valence electrons) Group 1 = +1 Group 2 = +2 Groups 13-18 = group # - 10 for most elements d-block elements must be looked up (groups 3-12 use roman numerals) oxidation numbers for ALL compounds MUST equal zero Metal-Non-metal (binary ionic compoun ...
... CHEMICAL NOMENCLATURE Oxidation Numbers (similar to valence electrons) Group 1 = +1 Group 2 = +2 Groups 13-18 = group # - 10 for most elements d-block elements must be looked up (groups 3-12 use roman numerals) oxidation numbers for ALL compounds MUST equal zero Metal-Non-metal (binary ionic compoun ...
Reactions
... • Chemical reaction – a process in which bonds of compounds are broken and reformed into different compounds • Molecules are rearranged during reactions, but composition stays the same • There are the same number of atoms in the products as there are in the reactants • Reactant – the starting materi ...
... • Chemical reaction – a process in which bonds of compounds are broken and reformed into different compounds • Molecules are rearranged during reactions, but composition stays the same • There are the same number of atoms in the products as there are in the reactants • Reactant – the starting materi ...
Slide 1
... • Sodium metal is composed of sodium atoms, each of which has a net charge of zero. (The positive charges of the 11 protons in its nucleus are exactly balanced by the negative charges on the 11 electrons.) Similarly, the chlorine molecule consists of 2 uncharged chlorine atoms (each has 17 protons ...
... • Sodium metal is composed of sodium atoms, each of which has a net charge of zero. (The positive charges of the 11 protons in its nucleus are exactly balanced by the negative charges on the 11 electrons.) Similarly, the chlorine molecule consists of 2 uncharged chlorine atoms (each has 17 protons ...
HYDROGEN FUEL CELLS & ENERGY EFFICIENCY
... By: Claudio Bolzoni David Carlos Echeverria Andres Segura Dari Seo ...
... By: Claudio Bolzoni David Carlos Echeverria Andres Segura Dari Seo ...
MS PowerPoint - Catalysis Eprints database
... which interacts with the externally applied electric field lies the basis for coating of metals. Is the friction between two solids in presence of liquid film an Electrified interface? Yes the efficiency of a wetted rock drill depends on the double layer structure at the metal/drill/aqueous so ...
... which interacts with the externally applied electric field lies the basis for coating of metals. Is the friction between two solids in presence of liquid film an Electrified interface? Yes the efficiency of a wetted rock drill depends on the double layer structure at the metal/drill/aqueous so ...
Chapter 8: Chemical Reactions and Physical Changes
... • Periodic table: chart that arranges elements by atomic number into rows and columns according to similarities in their properties ...
... • Periodic table: chart that arranges elements by atomic number into rows and columns according to similarities in their properties ...
Electrochemical Fundamentals
... In an electrolyte solution, the current is carried by the movement of ions, the fraction of which carried by the cation/anion is called transference number (t+ and t-) ...
... In an electrolyte solution, the current is carried by the movement of ions, the fraction of which carried by the cation/anion is called transference number (t+ and t-) ...
A Thumbnail Review of Regents Chemistry
... STRESSES: change in temperature / change in concentration / change in pressure CATALYSTS speed up both forward and reverse reactions; have NO EFFECT on equilibrium Equilibrium SHIFTS AWAY FROM an increase in concentration or temperature (heat) Equilbrium SHIFTS TOWARDS a decrease in concentration or ...
... STRESSES: change in temperature / change in concentration / change in pressure CATALYSTS speed up both forward and reverse reactions; have NO EFFECT on equilibrium Equilibrium SHIFTS AWAY FROM an increase in concentration or temperature (heat) Equilbrium SHIFTS TOWARDS a decrease in concentration or ...
Medical Physics I: Basics of medical imaging and radiotherapy
... Prof. Dr. U. Oelfke – WS 2011/2012 ...
... Prof. Dr. U. Oelfke – WS 2011/2012 ...
Redox - edl.io
... Exercise 17 For this reaction, identify the atoms that are oxidized and reduced, and specify the oxidizing and reducing ...
... Exercise 17 For this reaction, identify the atoms that are oxidized and reduced, and specify the oxidizing and reducing ...
AP Reactions - Georgetown ISD
... Since all these happens on the negative electrode. So, H2 gas forms from the negative electrode and that's exactly what happens when water reduces at the cathode. (Trick #2) When CuSO4(aq) is electrolyzed, you know that Cu° metal is going to form because copper's potential is higher than water. So, ...
... Since all these happens on the negative electrode. So, H2 gas forms from the negative electrode and that's exactly what happens when water reduces at the cathode. (Trick #2) When CuSO4(aq) is electrolyzed, you know that Cu° metal is going to form because copper's potential is higher than water. So, ...
Catalyst Activity (in your notebook)
... – represents identities and relative amounts of reactants and products in the chemical reaction – uses symbols and formulas ...
... – represents identities and relative amounts of reactants and products in the chemical reaction – uses symbols and formulas ...
AP Chemistry Test Review
... Other Stuff: 1) I suggest that you look over your AP Equations Sheet to re-familiarize yourself with what formulas and constants are given. 2) Look over the “Writing and Predicting Chemical Reactions” review sheet. The more reactions you practice, the better you will do, and the faster you will get. ...
... Other Stuff: 1) I suggest that you look over your AP Equations Sheet to re-familiarize yourself with what formulas and constants are given. 2) Look over the “Writing and Predicting Chemical Reactions” review sheet. The more reactions you practice, the better you will do, and the faster you will get. ...
9.2 Redox reactions
... Deduce the number of electrons transferred and produce half-equations. ...
... Deduce the number of electrons transferred and produce half-equations. ...
Chemistry of Life - juan-roldan
... covalent bonds ◦ Example is hydrogen gas molecule ◦ Bond can be single, double, or triple ...
... covalent bonds ◦ Example is hydrogen gas molecule ◦ Bond can be single, double, or triple ...
7th Grade
... surroundings. This is an endothermic reaction. The temperature of the solution falls to about 35 F for 10 to 15 minutes. ...
... surroundings. This is an endothermic reaction. The temperature of the solution falls to about 35 F for 10 to 15 minutes. ...
Electrochemistry
Electrochemistry is the branch of physical chemistry that studies chemical reactions which take place at the interface of an electrode, usually a solid metal or a semiconductor, and an ionic conductor, the electrolyte. These reactions involve electric charges moving between the electrodes and the electrolyte (or ionic species in a solution). Thus electrochemistry deals with the interaction between electrical energy and chemical change.When a chemical reaction is caused by an externally supplied current, as in electrolysis, or if an electric current is produced by a spontaneous chemical reaction as in a battery, it is called an electrochemical reaction. Chemical reactions where electrons are transferred directly between molecules and/or atoms are called oxidation-reduction or (redox) reactions. In general, electrochemistry describes the overall reactions when individual redox reactions are separate but connected by an external electric circuit and an intervening electrolyte.