Assessment 1) Describe the difference between ionic and covalent bond. Ionic bonds have electrostatic forces that hold cations and anions together‚ and are electronic neutral. Covalent bonds are bonds that don’t give or take any electrons. In stead they share the elctrons 50) Which of these compounds contain elements that do not follow the octet rule? Explain. a) NF3: 5 + (7*3) = 26 b) PCl2F3: 5 + (7*2) + (7*3) = 40 c) SF4: 6 + (7 *4) = 24 d) SCl2: 6 + (7*2) = 20 The answer is “d”
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-457200315912500RATES OF FERMENTATION OF FRUIT AND VEGETABLE JUICES -1598295325501000OBJECTIVE The objective of this project is to study the rates of fermentation of the following fruit or vegetable juices. Apple juice 125412559309000Carrot juice INTRODUCTION Fermentation is a slow decomposition of complex organic compound into simpler compounds by the action of enzymes. Enzymes are complex organic compounds‚ generally proteins. Examples of fermentation are souring of milk curd‚ bread making
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Company #1: Neils Bohr Equation: 3Na2CO3 + 2AlPO4 = 2Na3PO4 + Al2(CO3)3 Reaction: Double Displacement Company #2: Hello Equation: C5H12 + 8O2 = 5CO2 + 6H2O Reaction: Combustion Company #1 Neils Bohr 3Na2CO3
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FORM 4G ELECTROLYSIS WORKSHEET TERM 3 2010-2011 1.Figure 1 below is a diagram of the apparatus used in the electrolysis of fused sodium bromide. Figure 1 a)Write the formulae for the ions present in the fused sodium bromide. b)Write an ionic equation to represent the reaction taking place at the positive and negative electrodes. c)When the heat source was removed‚ the crucible cooled and the lamp went out. Explain why the lamp went out when the crucible cooled. d)At the end of the experiment
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Procedure Access the virtual lab and complete the experiments. Part One (Flame Test): 1. Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame: Barium-green Calcium-red Sodium-yellow Rubidium-purple Potassium-blue Lithium-pink 2. Identify each unknown from Part One of the lab and briefly explain why you identified each unknown as you did.: Unknown 1-yellow. I think it is Sodium because
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1) Demonstrate understanding of the terms atom and molecule. Atom= Smallest Unit of Matter Molecule= 2 or more atoms chemically bonded. 2) Describe paper chromatography. 3) Interpret simple chromatograms. A method used to separate a Solution‚ using a Paper and a beaker of water. The Substances in the Paper go up depending on their Mass. We can say that a Solution has the same substance as another solution because they form a line of the same height. 4) Describe methods of separation
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E Name: 1. XPERIMENT 9 IODIMETRIC TITRATION OF VITAMIN C Section: Pre-Laboratory Answer the following questions before coming to the laboratory. Give the reason for the following; Iodimetric titrations are usually performed in neutral or mildly alkaline (pH 8) to weakly acid solution. 2. Iodine solutions are prepared by dissolving I2 in a concentrated solution of potassium iodide. 3. Iodimetric determination of vitamin C is performed rapidly after preparing vitamin C solution
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Part One (Flame Test): 1. Create and complete a data table for Part One of the lab. It should include the name of the element (or unknown) examined and the color of the observed flame SOLUTION | NAME | COLOR | KNOWN 1 | BARIUM | GREEN | KNOWN 2 | CALCIUM | RED | KNOWN 3 | SODIUM | ORANGE | KNOWN 4 | RUBIDIUM | PURPLE | KNOWN 5 | POTASSIUM | BLUE | KNOWN 6 | LITHIUM | VIOLET | UNKNOWN 1 | SODIUM | ORANGE | UNKNOWN 2 | POTASSIUM | BLUE | 1. Identify each unknown
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THE WONDERFUL HYGENIC WORLD OF SHAMPOO Everyone who uses shampoo could tell you that their main factors in choosing a shampoo to use are smell‚ look‚ and price. People are misinformed about shampoo and how to tell the difference between a good shampoo and a bad one. The main point of shampoo is to cleanse your skull of residue that is picked up either from hair products such as hair spray‚ gel or moose‚ as well as the dirt in the air‚ and perspiration. Shampoo is something that all of us use on
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An Introduction to Structure and Types of Solids Categories Crystalline Solids • Highly regular arrangement of atoms‚ ions and molecule • The position of the components are represent by a lattice • It has smallest repeating unit of lattice is called unit cell • Such as diamond‚ salt‚ sugar Amorphous Solid • A noncrystalline solid which their components not organized in lattice pattern. • Such as glass‚ plastic‚ gel Question 1. X rays from a copper X-ray tube (λ = 154) were diffracted at an
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