What sort of thing form in chemical reactions? Products are the finished product of a chemical equation‚ and reactants are what make up the products. ( atoms‚ matter‚ molecules‚ energy‚ rate‚ temperature) Name some compounds: H2O (Hydrogen and Oxygen elements - Water) CH4 (Carbon and Hydrogen elements - Methane) NaCl (Sodium Chloride- salt) Different types of compounds: Metal + Metal = Metallic Compound Metal + Non-Metal = Ionic compound Non-Metal + Non-Metal = Covalent compound Different types
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01.23.13 NAS102 CODE13873 VSEPR Theory VSEPR (Valence Shell Electron Pair Repulsion) theory proposes that the geometric arrangement of terminal atoms‚ or groups of atoms about a central atom in a covalent compound‚ or charged ion‚ is determined solely by the repulsions between electron pairs present in the valence shell of the central atom. The number of electron pairs around the central atom can be determined by writing the Lewis structure for the molecule. The geometry of
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Inside the living body‚ implanted metals are primarily exposed to highly oxygenated body fluids containing inorganic ions (chloride‚ carbonate‚ calcium‚ etc.)‚ proteins‚ lipids‚ amino acids and cells that assemble around the implanted metal [1]. Biomaterials devices made of smart metals such as the equiatomic binary alloy‚ nickel-titanium (commonly known as nitinol)‚
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Chemistry SCH3U Unit 1 Lesson 1 Key Questions 1. List three physical properties and one chemical property of a) an iron nail * conducts heat and electricity well * solid at room temperature * ductile * rusts in water (chemical) b) gasoline * liquid at 20deg C * boils between 20 and 200 degrees Celsius * not soluble in water * flammable in the presence of oxygen (chemical) 2. People in a workplace should have access to MSDS sheets so that * chemicals
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Analytical Chemistry Daniel C. Harris: 7-4‚ 8‚10‚12‚16 7-4) A 1.000g sample of unknown analyzed by Reaction 7-2 gave 2.500g of bis(dimethylglyoximate) nickel(II). Find the wt% of Ni in the unknown. 7-8) The man in the vat. Once upon a time‚ a workman at a dye factory fell into a vat containing a hot concentrated mixture of sulfuric and nitric acids‚ and he dissolved! Because nobody witnessed the accident‚ it was necessary to prove that he fell in so that the man’s wife could collect his insurance
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Exercise 14: Qualitative Anion Tests PURPOSE: The purpose of this experiment is to identify some commonly occurring anions & to study some of the reactions used for their identification. PROCEDURE: You must first determine to which of the three groups the various anions belong. Since no two people observe the same event in exactly the same way it is important to also conduct specific confirmation tests on the known samples of each anion. This information will help identify the anion
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1 The following experiment is intended to prove the concept of the Keshe Plasma Generator. Please Join Us At: www.TheNewEnergyIndustry.com The following experiment was designed by M.T. Keshe Nuclear Physicist and Engineer‚ and is intended to prove the concept of the Keshe Plasma Generator. Video of M.T. Keshe conducting this experiment are below. Video: Animated simulation of Keshe Plasma Generator. 2 Like to the Keshe Foundation Website/Plasma Generator
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Yellow Color after adding back HCl to potassium chromate Remains as yellow Part 2 (b): Thymolphthalein equilibrium Hln H+ + ln- Color of the solution changes from blue to colorless Time taken = 36.1s Part 2 (c): Ammonium ion / ammonium equilibrium NH3 + H2O NH4+ + OH- Initial color of NH3 Colorless Color after adding phenolphthalein Purple color Color after adding NH4Cl Colorless Questions and Answers: 1) Write down the equilibrium
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to 700nm 3.Explain why “roses are red and Violets are blue Answer human eye can view only the color that is reflected‚ the remaining color in visible spectrum are being absorbed by the plant pigments for energy use. Molecule or Molecular ion | Valence shell Electron pairs | Bonding Electron pairs | Nonbonding Electron pairs | VSEPR Formula | Approx. Bond Angle | Geometric Shape | BrCl3 | 5 | 3 | 2 | AX3E2 | <90o | T-shaped | IF4- | 6 | 4 | 2 | AX4E2 | 90o | Square planar
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hydrate solution will lose some of it mass after heated INTRODUCTION A hydrated salt is a crystallize salt molecule that is weakly attached to a certain number of water molecules. Salt is created when an acid’s anion (negative ions) and a base’s cation (positive ions) are combined to produce an acid-base molecule. A salt molecule that is not bound to any water molecules is an anhydrate‚ and a salt molecule that is bound to water molecules is a hydrated salt. In a hydrated salt‚ the water molecules
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