Dishwashing [pic] A person dishwashing See also wash-up period‚ the period immediately before Parliament is dissolved‚ when outstanding Parliamentary business is concluded. The term dishwashing refers to cleaning eating and cooking utensils‚ in addition to dishes. In British English the term washing up is more common. There are cultural divisions over rinsing and drying after washing.[citation needed] Implements Dishwashing is usually done using an implement for
Premium
different compounds are being worked with – potassium iodide‚ lead (II) nitrate‚ acetic acid and sodium bicarbonate. The purpose of this experiment is to determine whether or not a reaction has taken place using qualitative and quantitative analysis. Procedure Part 1 - Qualitative observations of both potassium iodide and lead (II) nitrate were recorded in a table. Then‚ the equipment and chemicals needed were gathered – potassium iodide and lead (II) nitrate‚ a graduated cylinder‚ Erlenmeyer
Premium Chemical reaction Chemistry Sodium
Water-We studied the difference between mineral oil and water using a hand lens. * Making iodine in water- We added one drop of potassium iodide and sodium hypochlorite (bleach) then mixed the two together producing iodine. * Making iodine in oil-We added two drops of mineral oil‚ one drop of water on the mineral oil‚ then added one drop of potassium iodide and sodium hypochlorite. Producing Iodine. Results: In class we conducted four experiments on
Premium Chemistry Scientific method Chemical reaction
arteries which gives it a deep red colour. (Cohen and Wood 2000) The two parathyroid glands are located between two layers of the capsule that covers the thyroid gland. It is an important feature as it monitors the circulating concentration of calcium ions in the blood. (Martini 2004) The functional unit of the thyroid gland is the follicle‚ a spherical group of cells that form a colloid from a casing protein-rich storage material. (Nussey and Whitehead 2001) Thyroglobulin is a protein synthesised
Premium Thyroid Thyroid hormone Endocrine system
To carry this out‚ our method combines sodium iodide and common bleach as the oxidizing agent in aqueous alcohol as the solvent. Balanced Chemical Equations: Physical Properties: Name of Chemical Chemical Structure Molar Mass (g/mol) BP/MP (ºC) Density (g/mL) Mass/Vol. Used Purpose 3-methoxy-4-hydroxybenzaldehye C8H8O3 152.1494 MP=81-83‚ BP=285 NA 0.1g Solute Ethanol CH3CH2OH 46.0688 MP=-114.1‚ BP=78.3 0.789 2.0mL Solvent Sodium Iodide NaI 149.8943 MP=661‚ BP=1300 3.667 0.117g Catalyst
Premium Chemistry Chemical reaction Oxygen
Phenyl Salicylate per parts A‚ B‚ C * 2 g Potassium Iodide per parts A‚ B‚ C * 2 g Sodium Chloride per parts A‚ B‚ C * 2 g Sucrose per parts A‚ B‚ C * 6 Bunsen Burners * 6 Test Tubes with 25 ml Ethanol each * 6 Test Tubes with 25 ml Water each * 6 100 ml beakers with 50 ml Water each * 10 g Calcium Chloride per parts D * 10 g Citric Acid per parts D * 10 g Phenyl Salicylate per parts D * 10 g Potassium Iodide per parts D * 10 g Sodium Chloride per parts D
Premium Sodium Solubility Sodium chloride
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *6145201818* CHEMISTRY Paper 3 (Extended) Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams‚ graphs or rough working. Do not use staples‚ paper clips‚ highlighters‚ glue or correction
Premium Sulfuric acid Zinc Oxygen
Cloud seeding can be performed from the ground using a launcher with silver iodide cartridges‚ that get shot into the clouds. Or the process can be done from an aeroplane that releases the silver iodide into the clouds from above. Using aeroplanes is the preferred method as it is more accurate. Ground Based Cloud Seeding is used in places where there is low level clouds over difficult terrain
Premium Water Water resources Water crisis
Experiment 6 :Observation | KA2 | KA3 | Weight of test-tube + solid / g | | | Weight of empty test-tube / g | X1 | X2 | Weight of solid / g | | | Initial temperature of acid / °C | | | Final temperature of mixture / °C | θ1 | θ2 | Temperature change / °C | | | Discussion :[In the experiment sheet‚ the is an error where questions in (c)(i) should be "the heat change involved the reactions involving KA2 and KA3] (c). i : q1 = mcθ1 ; q = (30.00)(4.18)( θ1) = q1 q2 =
Premium Hydrochloric acid Sodium chloride Solubility
double displacement reaction between the solutions Lead (II) Nitrate (PbNO3) and Potassium Iodide (KI). It is important to obtain amounts of Lead (II) Nitrate and Potassium Iodide as close to 1.44g as possible. This reaction creates Lead (II) Iodide and Potassium Nitrate. The precipitate during this reaction is Lead (II) Iodide. The balanced equation is Pb(NO3)2 + 2KI= PbI2 + 2KNO3. In this lab the Lead (II) Iodide is separated from the solution and collected so it can be weighed for a mass. Potassium
Premium Chemistry Chemical reaction Solubility