6/15/2012 Somerset College | Charlese Conolly | Science 2012 | Could electrolysis be used to determine the comparative reactivity of metals? | Science 2012 | Could electrolysis be used to determine the comparative reactivity of metals? | Contents COULD ELECTROLYSIS BE USED TO DETERMINE THE COMPARATIVE REACTIVITY OF METALS? 2 BACKGROUND 2 Electrolytic and Galvanic corrosion: 3 AIM 5 HYPOTHESIS 6 VARIABLES 6 APPARTATUS 7 DIAGRAM 8 METHOD / PROCEDURE 8 RESULTS 11
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Objective In this experiment the purpose is to study the period of the pendulum with different masses. Secondly to also study the relationship in the different lengths of the string and how it affects the period. Thirdly to find the different (time) periods in the changes in the arc size. Theory If the pendulum is set ‚ the force of the motion is used to swing back and forth . where the t period is the time the pendulum takes to complete a cycle of oscillation. As t-1/f the complete distance of
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interesting chemistry (as you ’ll find about in this experiment). Have some fun and find out what color candle burns the fastest by conducting your very own candle race! Required materials 5 candles of varying colors‚ preferably white‚ pink‚ yellow‚ green‚ and blue (must be same brand and size) Ruler Marker or Sharpie Matches or lighter Scissors Clay‚ Putty‚ or Play dough Ceramic plate Stop Watch Pencil Notebook (to record results) Estimated Experiment Time About 1 to 2 hours Step-By-Step Procedure
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carry out the experiment. Firstly‚ varying the length of boiling might not be the best method to determine the amount of calcium ions. If time permits‚ I could perhaps investigate other variables such as pH‚ surface area and concentration and their effect on calcium leaching. Moreover‚ I could also use other types of fish soup stocks and compare to determine which soup has more calcium in it. Lastly‚ I have purchased “cleaned” anchovies from the supermarket to carry out this experiment‚ where the head
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at a 7. After two minutes elapsed‚ I again rubbed the sandpaper gently with my right index finger. My perception of the coarseness of the sandpaper did change during this experiment. On the second trial‚ the texture of the sandpaper felt smoother to the touch. I rated the coarseness at a 4 the second time. During this experiment‚ the sensory receptors located in the nerve endings on my fingertip responded to the presented stimulus‚ recognizing the pressure of touching the sandpaper. This information
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part of the advancement of medicine. When research involves human subjects‚ we assume that all subjects are being treated morally‚ and that the researchers will be conducting the studies with respect to the subject’s natural rights as a human being. History shows us that medical studies have not always been conducted this way. The Jewish Chronic Disease Hospital‚ The Tuskegee Syphilis experiments‚ and the Hepatitis studies at the Willowbrook State School‚ are a few examples of highly unethical research
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The Aim of the experiment: In this experiment I will investigate the relationship between the concentration of the hydrochloric acid and the rate of a reaction. To find this out I will react different concentration of hydrochloric acid and magnesium‚ from there I will monitor the gas (hydrogen) produced and analyse the results. Prediction: I predict the higher the molarity of the hydrochloric acid the faster the rate of reaction therefore the quicker the gas will be produced in the specific
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Animals for testing or not In the two articles‚ Heloisa Sabin and Peggy Carlson have different points about the animal testing. Both articles argued on the issue and there does not seem to be any agreement between the two writes‚ while there is an evident disagreement between them. Sabin agrees to Animal Testing. Animal research saves human lives but Carlson disagrees. Animal tests are unreliable. In “Animal Research Saves Human Lives” Heloisa Sabin (The Wall Street Journal‚ October 18‚ 1995)
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importance of hair fibres in forensic science and strives to grasp concepts of such a field. Aim The aim of this investigation was to closely examine three different hair types and reflect on the similarities and the differentiating features. An experiment Materials * Microscope * Hair samples (Guinea Pig‚ Human and Dog) * Slides * Sticky Tape * Tweezers Method 1) Set-up the microscope on a flat bench with appropriate materials
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Animals are such agreeable friends. They ask no questions and they pass no criticism.” So it is no surprise that scholars have long been intrigued by the possibility that animals possess largely untapped therapeutic powers. Most Americans are animal lovers; about 63 percent of U.S. households contain one or more pets‚ according to the American Pet Products Manufacturers Association. Several‚ but not all‚ studies suggest that those of us who own pets tend to be somewhat happier than those of us
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