Abstract This experiment introduces magnetism‚ evaporation and filtration as ways to separate mixtures. Temperature when soluble Sand N/A Iron N/A Sodium Chloride 400F Benzoic Acid 100F Experiment and Observation After gathering all the material needed to conduct these experiments‚ the first experiment was initiated. The mixture of solids was weighed out as well as the 10cm square piece of paper and the weighing dish. The mixture was spread out in a very thin layer on a piece
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nitrate in a dropper bottle * 0.1 mol/L Sodium chloride in a dropper bottle * 0.1 mol/L Sodium iodide in a dropper bottle Method: 1. Ensure you are wearing safety glasses 2. Take the petri dishes and label then 1‚ 2‚ 3‚ and 4. 3. Add 20 drops of silver nitrate solution to each petri dish. 4. Add 20 drops of sodium chloride to petri dish one and three. Mix with stirring rod and observe the reaction. 5. Add 20 drops of sodium iodine to petri dishes 2 and 4. Mix with stirring
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of light as it moved from a higher energy state back down to a lower energy level. Using a spectrometer with diffraction grating‚ a hydrogen lamp was observed and emission wavelengths compared with the known wavelength values. Flames from ignited sodium chloride were also observed and wavelengths calculated. To calculate the
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Lab 1: Flame Test 11 Chemistry‚ university Preparation Conducted: September 20th‚ 2010 Purpose: To observe‚ and create a chart of the colours produced when solutions of known metal compounds are heated to high temperature. Question: What colours are produced when different metallic compounds are placed in a flame‚ and why this happens? Hypothesis/Prediction: Different salts will produce different colours when placed in a flame‚ due to the fact that each element has a different
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outside ) . This variation between the exterior and interior is achieved by the operation of the sodium / potassium (Na + / K +) The pump Na + / K + ATP spends . Expels three sodium ions that were in the interior of the neuron and introduces two potassium ions were outside. Sodium ions can not reenter the neuron‚ because the membrane is impermeable to sodium. Therefore‚ the concentration of sodium ions on the outside is high. Furthermore‚ three positive charges are lost every time the pump operates
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Reactivity starting from the least reactive. Li‚ Na‚ K c) A piece of sodium was dropped in a trough containing water. i) Describe what you would see. Sodium melts almost at once to form a small ball that dashes around the surface. . If the sodium becomes trapped on the side of the container‚ the hydrogen may catch fire to burn with an orange flame ii) Write a word and symbol equation for the reaction. sodium + water → sodium hydroxide + hydrogen 2Na + 2H2O → 2NaOH + H2 iii) what would be the
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COMPOUND – Sodium Hypochlorite * Page 12 : The Basics * Page 13 : Chemical Properties * Page 14 : Physical Properties * Page 15 : Safety Precautions * Page 16 : What else is it used in? * Page 17 : References Household Chemical: Bleach Product Use This product is used for: * Removing Stains * Whitening Whites * Killing Germs Chemical Ingredients * Water * Sodium hypochlorite * Sodium chloride * Sodium carbonate * Sodium hydroxide * Sodium polyacrylate
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was to intake at least 30 grams of fiber on weekdays and at least 25 grams on weekends. The other was to reduce my sodium intake by a quarter‚ on weekdays‚ of what it was per day and reduce it by an eighth on weekends. This preparation all started about a week before my 23 days of transformation. In the three beginning days I tracked my diet and found that my low fiber and high sodium consumptions were eye-opening problems. My average fiber intake per day rested at 21.18g‚ which was significantly
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millilitres of HCL with 2 grams of sodium chloride had the highest conductivity rate compared to the second most conductive solution‚ 50 milliliters of vinegar with 2 grams of sodium chloride‚ and the last conductive solution‚ 50 milliliters of distilled water with 2 grams of sodium chloride. In my first hypothesis I stated if I added sodium chloride to distilled water‚ than the overall conductivity will become more conductive than just distilled water‚ since the sodium chloride will break down into it’s
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higher surface-area to volume ratio in the larger cells‚ making the centre of the cells further away from the surface. Therefore‚ when dipped in sodium hydroxide‚ the larger cells will not be dyed pink all the way through like the smaller cells after the ten minutes. Materials: 1x1x1 cm agar cube 2x2x2 cm agar cube 3x3x3 cm agar cube 100 ml of sodium hydroxide Goggles Petri dish Scissors Timing device Tweezers Beaker Graduated cylinder Procedure: Refer to ’Nelson Science Perspectives
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