Lab 2 – Water Quality and Contamination Experiment 1: Effects of Groundwater Contamination Table 1: Water Observations (Smell‚ Color‚ Etc.) Beaker Observations 1 This beaker has water only‚ clear with no smell 2 I mixed oil in the water‚ the oil then started to settle at the top of the water. (oil is not a soluble) 3 Beaker contained vinegar and water‚ the water got a little cloudy and the vinegar smell is very strong. 4 The water and laundry detergent mix had a soapy look to it‚ water also
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Barua Madhabi Keywords: beet root model system‚ spectrophotometer‚ betacyanin‚ cellular membrane‚ phospholipid Abstract The cellular membrane separates and protects the cell acting almost as a wall. Depending on what stressors there are the cellular membrane can become damaged. The objective of this experiment was to examine the structure of the cell membrane using the beet root model system by observing the effects of solvents on the beet root. The beet root was placed in seven solvents
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has taken place and the powder granules have diffused into the hot cup of water. On the other hand‚ every day we become unintentional witnesses of osmosis when the roots of the plants try to suck up the water from the soil (1). The purpose of this lab is to show clearly in an understandable way how diffusion and osmosis happen and to help one realize the way they occur. If a cube of beat is put in hot water (5 trials – 5 temperatures: 60 ºC‚ 70 ºC‚ 80 ºC‚ 90 ºC‚ and 100ºC)‚ then the mass of the
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The Relation of Antiseptics and Bacteria Growth Purpose: To explore the effectiveness of different levels of concentration of antiseptic and antibacterial products’ prevention of bacterial growth. Question: Amongst common household products‚ which antiseptic and level of concentration is more effective at inhibiting the growth of bacteria? Introduction: Antiseptics are antimicrobial substances used on living tissue to reduce the possibility of infection‚ putrefaction or sepsis. The word “anti”
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What are the properties of water? In mini-lab 1‚ water was dropped onto the flat surface of a penny until the surface tension of the water was broken. 50 drops were able to be put onto the penny surface‚ with 51 drops of water being the point at which the hydrogen bonds of the water droplets that had created surface tension prior to drop number 51 failed to keep the surface tension‚ and the water spilt over the edges of the penny. This number of drops on the penny‚ 50‚ was possible because of cohesion
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Ehrlich’s technique was improved upon by two microbiologists‚ Ziehl and Neelsen. Like Ehrlich‚ Ziehl and Neelsen’s procedure requires heat to force the primary dye through the cell wall. Another microbiologist‚ Kinyoun‚ developed a procedure in which a detergent is used as a wetting agent and heating becomes unnecessary. Purpose: To identify members of genus mycobacterium Materials: • (2) Acid-fast Bacteria QA slides • Acid-fast stain reagent ‘set’ • Carbolfuchsin • Acid-alcohol (3% HC1 in 95%
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African Diaspora and the World After reading the short story “Diaspora” by Joanne Hyppolite‚ I got a vivid understanding of how diaspora can have an effect on one’s identity. Over the past month we have studied many theories and concepts concerning race‚ gender‚ and politics. There are three theories that capture the essence of Joanne Hyppolite’s worldview as a Haitian growing up in America: intersectionality‚ identity‚ and diaspora. Individuals oftentimes experience the theory of Intersectionality
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SOAPS AND DETERGENTS _DISCUSSION_ The goal of this project was to make‚ and test four soaps‚ and two detergents. The purpose of making four different soaps and two detergents was needed in order to decide which one would be best for the environmental group to use in the future that would allow for the safest cleanup of an oil spill while not harming the animals or the environment in the process. It was necessary to test the impact of the four soaps and two detergents by analyzing their different
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In the Stoichiometry Challenge Lab we compared the theoretical results of the reaction between sodium carbonate (Na2CO3) and sulfuric acid (H2SO4) with the actual data we found. I hypothesised that If the mole ratio between Na2SO4 and H2SO4 is 1:1 then when I react 0.5 grams of Na2SO4 (reactant with H2SO4) I should get 0.669 grams of Na2SO4. The actual reaction between .05 grams of Na2CO3 and 5 mL of of H2SO4 produced 0.79g of Na2SO4. When I were testing the reaction‚ I measured out the reactants
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Bonnie Bell Mrs. Legary Biology P.6 21‚ Sept. 2011 Milk Lab Final This investigation consists of testing the reaction between milk‚ food coloring‚ and dishwashing soap. Different kinds of milk were tested‚ depending on the amount of milk fat content. The investigation was based on 2 questions. Lab one’s problem statement‚ using only milk fat and food coloring was: How does food coloring react in different kinds of milk fat? The second lab’s problem statement‚ using milk fat‚ food
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