Benny Ndegwa April 2nd 2013 Mr. Metoyer Lab Biology The Colorful Guppy Lab Report Problem: What is the relationship between the brightness of the guppy and their predators and mates? Hypothesis: If predators attack the guppy populations‚ then the drab guppy population will increase due to high predation. Materials: 1. Guppies 2. Computer Data Table: | % of Brightest Guppies | % of Bright Guppies | % of Drab Guppies | % of Drabbest Guppies | Trial 1 | 62 | 9 | 22 | 7 |
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Amanda America Dickson or also known on her family’s plantation in Hancock County‚ Georgia as “Miss Mandy‚” was born to Julia a housekeeper at David Dickson’s plantation. David Dickson a 40-year-old white male raped her mother at the age of 13 and later she gave birth to Amanda. Amanda was extremely lucky to have been in favor of her father and grandmother in which she was treated very well and received a lady’s upbringing despite being legally enslaved to her father. Amanda eventually married
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Abstract This experiment is to study the effect of temperature on the rate of reaction between potassium permanganate with oxalic acid. We used 2cm3 of 0.02M potassium permanganate and 4cm3 of 1M sulphuric acid into a test tube. In another test tube‚ we placed 2cm3 of oxalic acid. We placed the test tubes in a water bath at 40‚ 45‚ 50‚ 55 and 60oC respectively. When the solutions have attained these temperatures pour the oxalic acid into the acidified permanganate solution and recorded the time
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High School Students’ Conceptions about Energy in Chemical Reactions (focusing only in exothermic and endothermic reactions). Aim The aim of this study is to investigate students’ understanding of the energy concept in chemical reactions particularly in endothermic-exothermic reactions. Both qualitative and quantitative methodology was used for this investigation. A twenty-item multiple choice test was developed about the topic to measure the students’ understandings. This concept test was
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endothermic reaction happened everywhere around us. Basically exothermic and endothermic reaction is transfer energy to the surroundings and take in energy from the surroundings (BBC GCSE bitesize). If the reaction forward ，then is exothermic.If the reaction is the backwards ‚then is endothermic. When a reaction take place‚ the energy started to transfer from different object to the surroundings or take away energy from the surroundings. When temperature started to change. Exothermic Reaction An exothermic
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Color Symbolism in the Great Gatsby: Corruption and Characterization “Involuntarily I glanced seaward- and distinguished nothing except a single green light‚ minute and far way‚ that might have been the end of a dock” (p. 21) The Great Gatsby by F. Scott Fitzgerald was set in the Roaring Twenties‚ which were known for loud parties‚ corruption‚ dishonesty and the wannabe rich. F. Scott Fitzgerald creates the theme of corruption‚ particularly of the American Dream‚ in The Great Gatsby by presenting
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Water Scarcity & the Importance of Water Introduction: This report has been written to inform you of the world water crisis which is getting worse every second. It has also been written to inform you about the water scarcity and importance. Water Scarcity and importance: Clean‚ safe drinking water is not easy to find any longer. Today‚ nearly 1 billion people in the developing world don’t have access to it. Yet‚ we take it for granted‚ we waste it‚ and we even pay too much to drink it from little
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Redox reactions (Redox terminology‚ galvanic cells‚ standard electrode potentials‚ strength of oxidizing/reducing agents‚ corrosion and protection against it) Oxidation is defined as the loss of electrons and reduction is defined as the gain of electrons. Oxidizing agents‚ such as oxygen are defined as substances which accept electrons; reducing agents are substances which donate electrons. Redox reactions are: a) The reactions of metals with non-metals 2Na+Cl2→2Na+Cl- b) The reactions
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determine the reaction time of the test participant and using the subtractive method identify the selection time and identification time of the participant. The experiments had one participant who participated in a total of 6 experiments; two experiments required a simple reaction with a single stimulus and 4 experiments that required a more complicated reaction. Keywords Subtractive method – the procedure of estimating the time it takes to perform various cognitive operations. Simple reaction – this
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Lab #4: Aqueous Reactions Introduction: In this experiment we studied the two different types of aqueous chemical reactions‚ double replacement and single replacement. In a double replacement reaction one or both of the products is an insoluble ionic compound or otherwise known as a precipitate; or a non-electrolyte; or a gas. In a single replacement reaction there is typically a metal and an ionic compound consisting of a metal cation and a non-meatl anion. Singel replacement ractions occur when
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