What affects enzyme activity lab introduction enzymes are biological catalysts that help to carry out the thousands of chemical reactions that occur in living cells they are generally large proteins made up of several hundred amino acids in an enzyme-catalyzed reaction, the substance to be reacted, the substrate, binds to the active site of the. Lab 7 analysis of hard water prelab assignment before coming to lab: use the handout lab notebook policy as a guide to complete the following sections of your report for this lab exercise before attending lab: title and date of lab, introduction, materials/methods and data tables an outline or flow chart of the procedure is appropriate for the. These are not signs of poor housekeeping, but are rather signs of hard water from the municipal water supply to answer the following three questions, refer to the solubility rules in the lab manual for this experiment 4 explain why solutions of ca 2+ and mg 2+ in the presence of carbonate leave deposits (see equation 1), but na + does not 5. Fall 2014 chem 321 l 2 week 2: synthesis of indigo dye or synthesis of nylon-6,6 and plexiglass (choose 1) pre-lab everyone: pre-lab notebook pages completed before lab (title, source citation, purpose statement, definitions. Ap biology lab 9: transpiration pre-lab questions: 1what are the physical and chemical properties of water that allow water to move from roots t. The amount of dissolved calcium and magnesium in the water the simple definition of water hardness is the amount of dissolved calcium and magnesium in the water hard water is high in dissolved minerals, both calcium and magnesium you may have felt the effects of hard water, literally, the last. Kirchhoff’s laws lab pre-lab questions page instructor:_____ 1 write down ohm’s law equation and then express what it means in a sentence 2.
Water cycle - atmosphere (6) pre lab objectives: 1 exploring atmospheric motion 2 discovering the jet stream vocabulary: doldrums jet stream polar easterlies trade winds westerly winds materials: crayons or colored pencils globe or map of world ping pong ball/ hair dryer bernoulli’s pipe background: the earth is a. Pre-lab discussion discuss the chemical synthesis of soap starting with fats or oils fat + lye -- soap + glycerine discuss the history of early soap synthesis in the home using fats from animals and lye leached from fireplace ashes demonstrate to students that: presence of sulfate ion is not responsible for hard water behavior use sodium. Pre-lab answer key 1 how do organisms make their shells what are shells made of write out both the chemical formula and the material shells are made when the organism takes in chemicals it needs from the water surrounding it, alters the chemistry internally, then secretes the hard shell shells can be made of calcium carbonate (caco 3) 2.
Determination of the hardness of water one of the factors that establishes the quality of a water supply is its degree of hardness hardness is defined as calcium and magnesium ion content. Salinization lab water quality lab air quality lab water quality lab partners: mitchell and michael pre-lab questions: rain water is normally slightly acidic because carbon dioxide dissolves into it forming a weak carbonic acid, that results in the rain water having a ph of around 56 (measuring acid rain) oxygen-demanding wastes. Experiment 15 it’s a soap opera outcomes after completing this experiment, the student should be able to: • prepare a soap starting with animal lard.
Materials: 1 safety goggles & lab aprons 2 compound microscope, slides, coverslips 3 test tube rack with clean small culture tubes (13x100 mm works well. Antacid components sodium bicarbonate [nahco 3] – sodium bicarbonate is a weak, short-acting antacid while generally a safe household remedy, its high sodium content is a disadvantageunlikely to be recommended by doctors, “bicarb” or “baking soda” is still a common component of many patent medicines. Properties, behavior in hard water, alkalinity, and ability to react with mineral acids in each of the following tests use the soap and detergent you prepared in parts a and b of this experiment if you were unsuccessful in preparing the soap or the detergent, you can use a sample of ivory soap and/or laundry or dishwashing detergent available in the.
Sample exam questions sample exam questions give you an online resource to prepare for your exam in preparation for taking a certification exam, review the following questions as a sample of the type of questions covered while these sample questions are not duplicated on any exam and they are not necessarily representative of current. Pre-lab questions 1 for the permanent magnet shown below, draw its magnetic field lines n s what happens to the north and south poles if you break the magnet in half label the appropriate north and south ends for each half what if you break each piece in half again and again and again, until you get to what the greek atomists called 'the.
Big idea investigation 4 t81 cellular processes: energy and communication 2 investigation 4 diffusion and osmosis what causes plants to wilt if. A local beverage company is trying to find a new way to soften the hard water that is supplied to the company's factories the process they are using now makes the water safe to drink but it is also expensive while other groups are assigned to test the safeness of softened water, your group has been assigned to test the actual water. Do you know how water hardness works the article explores the differences between hard and soft water. Hard water contains metal cations, such as ca 2+ and mg 2+, that react with the charged ends of the soaps to form insoluble salts go to prelab questions, data sheet, and post-lab questions (note: the pre-lab link is separate from the data sheet and post-lab link.