household acids and bases you can test are vinegar Acids and bases react with metals. Acids release hydrogen gas when reacted with metals. Sometimes hydrogen gas is released when a base reacts with a metal‚ such as reacting sodium hydroxide (NaOH) and zinc. Another typical reaction between a base and a metal is a double displacement reaction‚ which may produce a precipitate metal
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Physical and Chemical Reactions Lab #4 Alesa Cannon Objective: To investigate the physical and chemical properties of a pure chemical substance. Procedure: 1. Half-fill one well of a 24-well plate with 6 M HCl and half-fill a second well of the 24-well plate with 6 M NaOH. Suck up these chemicals into their labeled pipets for later use. 2. Perform the following steps on each of the substances to be tested. Complete all tests of one substance and record your observations before proceeding
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Cooling Water Problems and Solutions Course No: M05-009 Credit: 5 PDH A. Bhatia Continuing Education and Development‚ Inc. 9 Greyridge Farm Court Stony Point‚ NY 10980 P: (877) 322-5800 F: (877) 322-4774 info@cedengineering.com COOLING WATER PROBLEMS AND SOLUTIONS Water is used in cooling systems as a heat transfer medium and frequently also as the final point to reject heat into the atmosphere by evaporating inside cooling towers. Depending on the quality of available fresh
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------------------------------------------------- Liquid–liquid extraction From Wikipedia‚ the free encyclopedia Liquid–liquid extraction also known as solvent extraction and partitioning‚ is a method to separate compounds based on their relative solubilities in two different immiscible liquids‚ usually water and an organic solvent. It is an extraction of a substance from one liquid into another liquid phase. Liquid–liquid extraction is a basic technique in chemical laboratories‚ where it is performed
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Edexcel A2 Chemistry Questions and Answers Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Unit 4 Rates‚ equilibria and further organic chemistry Multiple-choice questions ..............................................................................7 Structured questions . . . . . . . . . . . .
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2. Qualitative ORGANIC functional group tests in various homologous series | TEST FOR | TEST METHOD | OBSERVATIONS | TEST CHEMISTRY and comments | ALKENE or alkyne i.e. any non-aromatic unsaturated hydrocarbon with a double or triple carbon-carbon bond. | Bubble gas through‚ or add liquid to‚ a solution of bromine in hexane or water. | The orange/brown bromine rapidly decolourises‚ as a saturated colourless organic bromo-compound is formed. | R2C=CR2 + Br2 ==> BrR2C-CR2BrRCCR + 2Br2 ==> Br2RC-CRBr2R
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IGCSE Chemistry 2012 exam revision notes by Samuel Lees Contents: 1. The particulate nature of matter 2. Experimental techniques 2.1 Measurement 2.2 (a) Criteria of purity 2.2 (b) Methods of purification 3. Atoms‚ elements and compounds 4.1 Atomic structure and the Periodic Table 4.2 Bonding the structure of matter 3.2 (a) Ions and ionic bonds 3.2 (b) Molecules and covalent bonds 3.2 (c) Macromolecules 3.2 (d) Metallic bonding 3 Stoichiometry 4
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bus 9.2 – Production of Materials: Δ. Construct word and balanced formulae equations of all chemical reactions as they are encountered in this module: • Basic reactions to remember: – Acid reactions: ▪ acid + base [pic] salt + water HCl(aq) + NaOH(aq) [pic]NaCl(s) + H2O(l) ▪ acid + metal [pic] salt + hydrogen gas HCl(aq) + Mg(s)[pic]MgCl2(s) + H2 (g) ▪ acid + carbonate [pic] salt + carbon dioxide gas + water HCl(aq) + CaCO3(s)[pic] CaCl(s) + CO2(g) + H2O
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I woke up and could not remember what had happened… … I woke up and could not remember what had happened. All I could feel was a knock out in my head‚ extremely painful‚ as if lightning had struck me and split my head into two. I was searching for Ethan‚ but the moment I took a deep breath‚ the stench of the crimson blood in the surrounding rushed into my nose‚ stopped me from identifying any other smells in the atmosphere. There is no a single beam of light in the room which made me feel uncomfortable
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both Water (H2O [representing saliva]) and Hydrochloric Acid (HCl [representing the stomach’s acid]). The amount of Water and Hydrochloric Acid will be kept constant between tablets‚ and tests. Aim To investigate and compare the rates at which different Aspirin Tablets dissolve. The different kinds of Aspirin tablets are: Enteric Coated Tablets Capsules Regular Tablets Dissolving Tablets. Each tablet will be dissolves in both Water and Hydrochloric Acid (representing saliva and stomach acid
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