molecular formula iv.both have the same physical properties a.i‚iv b.ii‚iii c.i‚ii‚iii d.ii‚iii‚iv paper 2 1.in an experiment‚bromine water is added drop by drop into the potassium iodide solution in a test tube until bromine water is in excess.the test tube is shaken. a.i.state the colour of the potassium iodide solution(1m) ii.what solution colour is produced after it is mixed and shaken with bromine water?(1m) b.a small amount of tetrachloromethane liquid is added to the product in the
Premium Oxygen Chlorine Hydrogen
Chapters 11 12 Periodic Table Name __________________ ( ) Class __________ Date _________ History of the Periodic Table Russian chemist Dmitri Ivanovich Mendeleev 1834-1907 Arranged elements in order of increasing atomic masses Elements with similar chemical properties fall into the same vertical column Such an arrangement is the Periodic Table The Periodic Table The Periodic Table is a list of elements arranged in order of ______________ _____________ (__________) ____________. Groups
Premium Periodic table Transition metal Chlorine
Mix it thoroughly until the solids are well dissolved. After Na2S2O3 solution is made‚ standardize the solution against KBrO3. 25.00-mL aliquots of KBrO3 solution is pipetted into three 250-mL Erlenmeyer flasks. Place about 2-3g of KI (potassium iodide) in each flask and 5mL of 3M H2SO4 (sulfuric acid) as following. Titrate with Na2S2O3 right away until the solution changes its color to pale yellow. The expression to this reaction is presented as BrO3-(aq) + 6I-(aq) + 6H+(aq) → Br-(aq) + 3I2(aq)
Premium Chemistry Water Laboratory glassware
Respbid‚ Theo-Bid‚ Theo-Dur‚ Uniphyl); * sodium bicarbonate (Alka-Seltzer‚ Bicitra‚ Polycitra‚ or baking soda home remedy antacid); * carbamazepine (Carbatrol‚ Tegretol); * fluoxetine (Prozac); * metronidazole (Flagyl); * potassium iodide thyroid medication (Pima); * an ACE inhibitor such as
Premium Hypertension ACE inhibitor
Chemistry Investigatory Project To determine minimum amount of Bleaching Powder Required to disinfect different samples of Water. INDEX I. Introduction o Purification of Water o History of Water Purification o Bleaching Powder II. Experiment o Aim o Requirements o Theory o Procedure o Observations o Result o Precautions Introduction 98% of the Earth’s water is present in the oceans with an average salinity of 3.5%. The remainder of the
Premium Chlorine Water purification Water
a silver coated copper plate. This type of printed image is called a daguerreotype‚ and is made by polishing and cleaning a silver-coated copper plate and then reacting the silver coating with iodine vapors to form light-sensitive silver iodide. The silver iodide coated plate is then exposed to light through the optics of a camera that projects and focuses an image on the plate. In the ensuing reaction‚ the silver ions are reduced to silver metal. Finally‚ the plate is treated with mercury to produce
Premium Silver Photography Photographic film
Iodine is insoluble in water‚ for it to become soluble in water‚ potassium iodide is added‚ forming triiodide (MEL Science‚ 2015). When reacted with starch attach to structures within a starch molecule‚ leading to a blue-black colour (Ophardt‚ 2003). Starch is a carbohydrate‚ which contains two types of polysaccharides that are
Premium Protein DNA Oxygen
1. Disposing of Waste - Teachers should be aware of the appropriate method of disposal for any chemical used in the school laboratory. When in doubt‚ refer to the MSDS‚ a disposal manual‚ or the source of the chemical. a. Classification of Hazardous Waste The Environmental Protection Agency classifies wastes as: Ignitable: has a flash point below 140°C‚ is an oxidizer‚ or is an ignitable compressed gas. Corrosive: has a pH equal to or below 2.0 or a pH equal to or greater than 12.5. Reactive:
Premium Acetic acid Sodium Carboxylic acid
Naming Chemical Compounds PART A Name the following 1 S Sulfur 2 Sb Antimony 3 N2 Dinitrogen 4 PO43- Phosphate 5 Au Gold 6 Rb Rubidium 7 LiCl Lithium Cloride 8 AlBr3 Aluminum (III) Bromide 9 KMnO4 Potassium Manganate (VII) 10 Cu(OH)2 Copper (II) Hydroxide 11 FeSO4 Iron (II) Sulfate 12 NH4Cl Ammonium Chloride 13 ZnCO3 Zinc Carbonate 14 SnF2 Tin (II)Fluoride 15 MgSO4 Magnesium Sulfate 16 MnO2 Manganese (IV) Oxide 17 Ca3(PO4)2 Tricalcium Phosphate 18 NaOH Sodium Hydroxide
Premium Chemistry Oxygen Ion
LOS ANGELES - California is closely watching the crisis at a Japanese nuclear plant‚ but officials downplayed the threat that a radioactive cloud blown across the Pacific could pose for the US West Coast. While radioactivity could reach the United States from the quake-hit Fukushima plant‚ the levels would not be high enough to cause major health problems‚ said the Nuclear Regulatory Commission (NRC). Some experts disagreed‚ notably pointing to the west-east jet stream‚ but NRC -- which was asked
Premium Nuclear power Chernobyl disaster Nuclear fission