The different methods of measuring acids and bases in a solution By Starsky Intro to Biology September 26‚ 2011 Lab Partners: Kristen‚ Tania and Betty Introduction When using different methods to measure pH levels there are some tools that can be useful. Some more than others but by putting into action the different methods it may determine which tools will work best and give the best
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to create a solution or answer to the approached problem. The first step of the scientific method is defining the problem. What is the issue? Whether it be why crime rates are increasing in a certain region or what happens when you mix baking soda and vinegar‚ in order to start
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Since I was a young girl‚ I have always been interested in STEAM activities from teaching myself simple math on my easel board‚ to singing along to the radio in the car‚ to constantly asking my parents to make a baking-soda-and-vinegar volcano. Once I started going to school‚ I would pretend to be a doctor and use a website called Ed Heads and perform virtual surgeries. Being the 6-year-old I was‚ I had no idea what the names of the bones in the human body were called‚ but the process of being able
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Physical Reacts explosively with chlorine gas Chemical 5. Classify the following changes as Physical or Chemical. Water freezes at O degrees Physical Baking soda when combined with vinegar produces bubbles Chemical Moth balls gradually disappear at room temp Physical Ice cubes in a freezer get smaller with time Physical Baking soda loses mass as it is heated Physical Tarnishing of silver Chemical 6. How would you show that dissolving table salt is a physical change? Because
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Making a Model Maglev Train Magnetically levitating (Maglev) trains use electromagnetic force to lift the train above the tracks. This system greatly reduces wear because there are few moving parts that carry heavy loads. It’s also more fuel efficient‚ since the energy needed to overcome friction is greatly reduced. Although maglev technology is still in its experimental stages‚ many engineers believe it will become the standard for mass transit systems over the next 100 years. This project
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The Chemistry of Toothpaste Toothpaste is not a new thing. It has been traced back to Ancient Egypt. They used a powdered rock and vinegar‚ which created a chemical reaction that dissolves the plaque on teeth. In 1900’s people used hydrogen peroxide and baking soda or chalk‚ pulverised brisk and salt as a toothpaste. Toothpastes today‚ are mostly made up of abrasives‚ surfactants‚ a detergent‚ a thickener‚ a moisturizer‚ water‚ flavouring agents‚ coloring‚ sweeteners‚ fluoride and desensitizers
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Laboratory Report 6 Date Performed: 04/02/14 Date Submitted: 04/15/14 Name: Lisa Jacoby Title: Physical and Chemical Properties Purpose: Investigating the chemical properties of pure chemical substances as well as exploring the physical properties of pure chemical substances Procedure: 1. I half-filled one well of a 24-well plate with 6M HCl and half-filled a second well of the 24-well plate with 6 M NaOH. I then sucked up these chemicals into their labeled pipets. I then set
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Make a Battery from Potato Introduction: Batteries generate electricity through a chemical reaction between two different electrodes and one electrolyte. Use of Copper and Zinc electrodes and Sulfuric acid as electrolyte is a proven method for this process. We are wondering if we can use any other liquid as electrolyte? This gave us the idea of using a potato as electrolyte. After all a fresh potato has a lot of juice that may serve our purpose as electrolyte. Problem: Can Potato be used
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tablet dissolves is related to the catalyst‚ then the catalyst will affect the rate at which the tablet dissolves. MATERIALS: Thermometer‚ 250mL Beakers(3)‚ Mortar and pestle‚ Alka-Seltzer tablets‚ Timer with a second hand‚ Ice Water‚ Microwave‚ Vinegar (acetic acid)‚ Table salt. PROCEDURE: Part 1: Affects of Temperature 1. Prepare three beakers half-full of water at three different temperatures. * Half-fill the first beaker with ice water. * Half-fill the second beaker with tap water
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Stainless Steel d. Plastic 4. Also called vegetable strainers are essential for various tasks from cleaning vegetables to straining pasta or tin contents. a. Double Boiler b. Portion Scale c. Colanders d. Kitchen Shear 5. Good for baking but not practical on top or surface cooking. a. Glass b. Hard Rubber c. Teflon d. Plastic 6. A kitchen tool which is specifically designed for pulping garlic for cooking. a. Garlic Masher b. Garlic Press c. Garlic Chopper
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