Assessment Item 14 Beaudesert State High School An Investigation into the Roles of Nitrogen and Phosphorous in the Growth of a Wheat Crop By Alannah Hardgrave [pic] Table of Contents • Summery – Page 3 • Aims of Trial – Page 4 • Review of Literature – Page 5 • Method and Materials – Page 6 • Results – Page 9 • Discussion – Page 12 • References – Page 14 [pic] Summary This report was composed
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in the Mentos and Diet Coke. The structure of the Mentos allow carbon dioxide bubbles to form extremely rapidly. When this happens‚ you get the physical reaction of the coke exploding out of the bottle. Other carbonated drinks also work with this experiment. (Hiskey) One thing that contribute to this explosion is the structure of the Mentos. Mentos are fairly dense and sink rapidly‚ quickly creating bubbles that seed further
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In our society‚ there are many social norms we are expected to abide by. These unwritten rules and standards of behavior often go unnoticed‚ leaving society to take them for granted. We only become truly aware of the norms of society when they are actually violated. When a violation occurs‚ those who continue to conform may respond with positive or negative sanctions‚ such as humor‚ alarm‚ irritation‚ fear‚ or a wide variety of emotions. Our society also relies on language as its major bases for
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Bag to test several (at least 3) household items including household cleaning products with bromothymol blue. Rinse the pipet well before using it on the next household chemical. When finished with this experiment rinse the pipet well and return it to the Auxiliary Bag for use in future experiments. Name the items tested and record their results. Household Chemicals|Well No.|Observations of the Reaction| Tide Detergent|G12 |Light greenish - neutral| Glass Plus (generic Windex)|E12 |Blue –
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the weight on the string is 4oz‚ then the string will produce more swings. 2. If the string is 18 inches long‚ then there will be fewer swings. 4. Methods. What methods did you use to test your hypotheses? Write out the steps you took in your experiment. Use full sentences‚ including as much detail as possible‚ and write in paragraph form – no bullet points.
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concentration of sucrose solutions will determine the diffusion of water molecules. 6 Petri dishes To carry the experiment in it. Beaker of distilled water Using distilled water for osmosis means that no impurities therefore more valid results. Electronic Balancer To weight the potato strips before and after. Stop Watch To control time factor for all the experiments. 4-5 pieces of kitchen towel. Metal borer 1. Label six Petri dishes 1-6 with the right molar and solution
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Organic Chemistry: CHP 225 Thomas Hsieh Experiment 2: Boiling Points o Date experiment was performed: September 16‚ 2011 o Objective: To determine the boiling point of organic compounds such as tert-butyl alcohol‚ sec-butyl alcohol‚ n-butyl alcohol‚ and an unknown. o Principle: Boiling point is the temperature at which gas and liquid phases coexist in equilibrium. At this temperature‚ the vaporization rate and the condensation rate are equal. The liquid and vapor reach a state of dynamic
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Crater Design Experiment Aim: To see how the height in which the ball is dropped from affects the depth of the crater. Hypothesis: I predict that as the height in which the ball is dropped from increases‚ so does the depth of the crater (the data will be directly proportional). The scientific knowledge which supports this is that the golf ball has a gravitational potential energy which increases as the ball is dropped from higher heights. When the height increases the ball gains more gravitational
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1. Dancing Raisins Here’s another quick and easy science experiment. All you need is a glass of clear soda‚ such as ginger ale or club soda‚ and several small raisins. Fill a glass with soda. Leave about ½ inch (12.5 mm) of space at the top. Drop the raisins in. Those tiny bubbles attaching themselves to the raisins are carbon dioxide (CO2) bubbles. The irregular surface of the raisins enables a lot of CO2 to accumulate. When enough gas bubbles attach to the raisins‚ they act like tiny balloons
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gradient with the help of energy input and specific transport proteins (Campbell and Reece‚ 2002). For the analysis of cell membrane permeability and the mechanism of controlling water‚ human red blood cell is a convenient specimen through hemolysis experiments ^^^^^. The human RBC osmotic content is about 0.9% NaCl. In hypotonic solutions‚ the cells swell because of water influx and eventually they hemolyze where cell contents including hemoglobin are released into the medium. This can be indicated by
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