20mL of concentrated sulfuric acid * 20mL of 2mol/L sulfuric acid * 2 small pieces of each of copper‚ zinc and iron * Sandpaper * 10 test tubes * Test tube rack * 2g of sugar crystals (sucrose) * 2 wooden ice-cream sticks * 10mL measuring cylinders Steps: A: Sulfuric acid as an oxidising agent 1. Clean pieces of metal with sandpaper to remove oxide coating. 2. Add a piece of each metal to a separate test tube. 3. Add 5mL of concentrated sulfuric acid to
Premium Sulfuric acid Sulfur Hydrogen sulfide
peroxide Appearance of potato and hydrogen peroxide combination ________________________ Day 2 Materials: Part III: a penny dated after 1983 metal file or coarse sandpaper vinegar (CH3COOH) Part IV: baking soda (NaHCO3) vinegar (CH3COOH) cup spoon Procedures: Part III: Reaction between zinc and acetic acid 1. Use a file or sandpaper to completely remove the
Premium Oxygen Acetic acid
Potassium iodide in a dropping bottle 2 M Copper sulfate in a dropping bottle 2 M Sodium hydroxide in a dropping bottle 2 M Hydrochloric acid in a dropping bottle 4 Pyrex test tubes Test tube rack Spatula Bunsen burner‚ gauze mat Sandpaper Magnesium Ribbon Tongs Safety glasses Procedure: 1. This is a teacher-only demonstration. Place a 250ml Beaker in the fume cupboard. Place the pieces of Copper into the Beaker and add 150ml of concentrated nitric acid
Premium Chemistry Sodium hydroxide Laboratory glassware
Better Performance norton a275 DeliverS reSultS Better Work Smarter‚ FiniSh FaSter! Norton A275 is proven sandpaper technology that consistently outperforms conventional abrasives. It cuts faster‚ runs cooler‚ resists loading better‚ and lasts longer to help maximize productivity. ProveN PerformANce. Proven reSultS. www.nortonautomotive.com Better Performance norton a275 DeliverS reSultS feather-edging Sanding PrimerS StriPPing old Paint dry Sanding PlaStic and PUtty What makes high
Premium Harshad number
Language Rationale Language‚ simply put‚ is a system of symbols with an agreed upon meaning that is shared within a group of individuals. Maria Montessori understood that children have to learn language‚ that it is not inborn. She also understood the adolescent mind has a long sensitive period for language. Because language is deeply connected to the process of thinking‚ the child will need to be spoken to and listened to often. Each child learns language at their own rate and pace. There can
Premium Linguistics Montessori method Maria Montessori
The sequence of exercises through which the child is introduced to group operations with golden beads. “If education is always to be conceived along the same antiquated lines of a mere transmission of knowledge‚ there is life to be hoped from it in the bettering of man’s future” (Maria Montessori – The discovery of the child) Dr. Montessori recognized that children are born with a particular kind of mind
Premium Montessori method Maria Montessori Pedagogy
mineral deposits which were later proved to be valueless and this initiated early research and development of this company while in Duluth. This saw its success in selling sandpaper products. The company later increased its efficiency in quality production and supply chain. Innovations saw the development of waterproof sandpapers‚ the masking tape (this initiated the company’s prospects towards diversification) sold under the name Scotch Pressure-Sensitive Tapes and even was contracted in the production
Premium Corporation Globalization Multinational corporation
of hydrogen peroxide Appearance of potato and hydrogen peroxide combination ___________alot of foam came out of the potato because of the Hydrogen peroxide_____________ Day 2 Materials: Part III: a penny dated after 1983 metal file or coarse sandpaper (if
Premium Oxygen Acetic acid
+ FeCl2 2Fe (Ш) + 3CuCl2 (aq) → 3Cu + 2FeCl2 We can measure the mass of the two iron nails‚ and the copper after the reaction. Thus‚ we can compare the ratio of the mole and the mass of iron and copper. Procedure ⅰ) Clean two iron nails with sandpaper and steel wool ⅱ) Measure the mass
Free Stoichiometry Iron Yield
Title: The Montessori Education System General Purpose: To inform about another type of education Specific Purpose: To inform about the Montessori Education System Thesis: Education can come in many forms‚ Montessori Education System is just one of these many forms. Transition: What type of education did you have? Education can come in many forms‚ the Montessori Education System is just one of the many forms. Today‚ I would like to take a few minuets of your time to tell you a bit more about the
Premium Educational psychology Pedagogy Education