Lab #3 Atomic Structure & Classification of Matter Objectives Write the correct symbols or names of some elements. Describe some physical properties of the elements you observe. Categorize an element as a metal or nonmetal from its physical properties. Given the complete symbol of an atom‚ determine its mass number‚ and the number of protons‚ neutrons‚ and electrons. To identify and classify different types of matter. Background Primary substances‚ called elements‚
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Title: Physical and Chemical Properties Purpose: The purpose of this experiment is to investigate the physical and chemical properties of pure chemical substances by subjecting them to various environmental extremes. Procedure: Filled each test tube with substances provided and subjected them to various conditions. These conditions included‚ heat‚ cold water‚ hot water‚ acid and basic additions and tested on litmus paper. The reactions were observed and documented at each step. Data tables:
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IDLY SCIENCE REASONS FOR IDLY AND DOSAI MAAVU NOT GETTING PROPERLY FERMENTED 1) Both batters need Bio activity. So if there is not enough bacteria/Fungus/Yeast present in the batter‚ the maavu will not ferment or will not ferment properly. 2) If you are using chlorinated‚ Iodised water or bacteria free water or Ozonized water in your house‚ you will not be able to get proper fermentation in batter as all these chemicals have residual disinfection property.(except Ozone) . 3) If
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performed the same test inside a pig’s stomach‚ and concluded that an explosion was impossible while eating pounds of the material. The rumor‚ in part‚ caused by the false assumption that Pop Rocks contain an acid/base mixture (such as baking soda and vinegar) which produces large volumes of gas when mixed through chewing and saliva. The amount of carbon dioxide released by a packet of Pop Rocks is about 1/10th of what you would get in a mouthful of cola. While‚ the popping of the bubbles is
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Tips and Recipes for Quantity Cooking: Nourishing Minds and Bodies Tips and Recipes for Quantity Cooking: Nourishing Minds and Bodies has been created to assist people who prepare food for sale to students – such as food services staff‚ chef instructors‚ caterers‚ school teams‚ students‚ Parent Advisory Councils and others – in implementing the Guidelines for Food and Beverage Sales in BC Schools. It includes tips on how to choose healthy recipes‚ substitutions to make favourite recipes
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may be the best solution. Here are some natural remedies to help eliminate the need to take medication for heartburn; 1. Fennel had been found to be helpful in controlling the discomfort associated with heartburn. 2. Taking one teaspoon of white vinegar along with a glass of warm water has been found to be effective in some heartburn sufferers. Once the discomfort starts to set in‚ take this home remedy to control the acid reflux. 3. Peppermint has been known for being very effective also as a natural
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solutions was calculated using the obtained values from the procedures. In the third part‚ the percent of acetic acid in vinegar was determined. The buret was rinsed with 0.2M NaOH and was later on filled with the same solution up to its mark of 0.0 ml. 5ml of commercial vinegar‚ 45ml distilled water and two drops of phenolphthalein was placed in the Erlenmeyer flask. The vinegar was titrated with 0.2 NaOH until its color turned to light pink and then the volume of
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DIET AND HYPERTENSION Hypertension or High Blood Pressure‚ as it is commonly called‚ is a condition in which the blood pressure in the arteries is chronically elevated. With each heart beat‚ heart pumps blood through the arteries to the body. Blood pressure is the pressure or force with which blood is pushed against the walls of the blood vessels. If the pressure is too high‚ the heart has to pump harder which in turn can damage the body organ and cause illnesses like stroke‚ heart attack‚ heart
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Review of the Related Literature Cucumber The cucumber (Cucumis sativus) is a widely cultivated plant in the gourd family Cucurbitaceae‚ which includes squash‚ and in the same genus as the muskmelon. The plant is a creeping vine which bears cylindrical edible fruit when ripe. There are three main varieties of cucumber: "slicing"‚ "pickling"‚ and "burpless". Within these varieties‚ several different cultivars have emerged. The cucumber is originally from India‚ but is now grown on most continents
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