To investigate the temperature change in a displacement reaction between Copper Sulphate Solution and Zinc Powder Preliminary Experiment: Correlating Magnesium Powder and Copper Sulphate Solution ========================================================= I will mix 4cm of Magnesium ribbon and 50cm³ of Copper Sulphate Solution into a polystyrene cup until I find a reaction. =============================================================== Prediction ========== The magnesium will displace the copper and the temperature will rise. Magnesium + Copper Sulphate † Copper + Magnesium ------------------------------------------------ Mg + CuSO4 † Cu + MgSO4 Hypothesis ========== The Magnesium will displace the Copper and rise in temperature because it is more reactive and it is an exothermic reaction. Results ======= Start Temperature 22°C End Temperature 28°C Rise In Temperature 6°C This preliminary experiment was very useful because it is clear that there was a very small rise in temperature. This can be solved by using the powdered form of metal, that can be used to increase the surface area. Main Experiment: ================ Correlating Zinc and Copper Sulphate Solution ============================================= Prediction ========== I predict that the zinc will displace the copper to become zinc sulphate. --------------------------------------------------------------- Zinc + Copper Sulphate Zinc Sulphate + Copper I predict that the copper sulphate will only partially be heated during the reaction depending on the mass of zinc added to the solution of 50ml3. I predict that this reaction of the zinc and copper sulphate will be exothermic, therefore it will produce it’s own heat. I predict that the zinc powder will release more heat than zinc ribbon. I predict that the more zinc added to this reaction, the more the temperature would become up to a certain point. I predict that the temperature will increase when adding more zinc until a certain mass of zinc is reached. If more zinc is added when the ‘peak’ has been reached, then the temperature will decrease. Hypothesis ========== The copper will be displaced because zinc is higher in the reactivity series than copper therefore zinc is more reactive. The copper sulphate solution will only partially be heated during the reaction because there is not enough zinc to react with all of the copper depending on the mass of zinc. This reaction will be exothermic because all the heat will be given off in this reaction. The zinc powder will release more heat than zinc ribbon due to the powder having a larger surface area. The peak temperature is when there is about enough zinc to react with the copper sulphate. Any less zinc and it would not react as much producing less heat. Any more zinc would leave excess amounts, which would be harder to heat up and will reduce temperatures.
In this case, the nitrate ion moved from one compound to another as the Cu was replaced by Zn. The zinc dissolved to form zinc (II) ions as the copper (II) ions came out of the solution as copper metal and deposited on the surface of the
The purpose of this lab was to to cycle solid copper through a series of chemical forms and return it to its original form. A specific quantity of copper undergo many types of reactions and went through its whole cycle, then returned to its solid copper to be weighted. We observed 5 chemical reactions involving copper which are: Redox reaction (which includes all chemical reactions in which atoms have their oxidation state changed), double displacement reaction, precipitation reaction, decomposition reaction, and single displacement reaction.
In Nathan O. Hatch’s “The Democratization of American Christianity” he quickly forms his thesis and expands on the argument “both that the theme of
Volume's Effect on a Copper Sulphate Solution We are trying to find out if the current though a copper sulphate solutions volume is increased. To find this information out I shall perform an experiment using the following equipment; · 1 power pack · 1 beaker · 2 carbon rods for anode and cathode · 1 ammeter · 1 measuring cylinder · 2 crocodile clip wirers I shall also be using 60cm3 volume of copper sulphate in my preliminary results to decide upon the concentration of copper sulphate and the voltage I shall use. The following diagrams show the step by step process in which I will do my experiment; [IMAGE] [IMAGE] [IMAGE] [IMAGE] I will take 10 readings from 10cm3 to 100cm3. I will repeat my experiment to give my experiment a fair average. I will keep the power pack the beaker the carbon rods the crocodile clips the ammeter the concentration of copper sulphate and the measuring cylinder the same each time I do the experiment this experiment.
Investigation of How Temperature Affects the Rate of Reaction of Sodium Thiosulphate and Hydrochloric Acid
The American Evangelical Story, A History of the Movement written by Douglas A. Sweeney offers an outline that better defines evangelicals while the author explores the roots of the Great Awakening and the Gospel. Sweeney presents the history of theology within the evangelical movement. Currently, Douglas Sweeney serves as the associate professor of Church history and is the Director of the Carl F. H. Center for Theological Understanding at Trinity Evangelical Divinity School. [1] Sweeney begins by addressing the word, meaning, and definition of “evangelicalism, Sweeney states, “I tell the story of its birth of in the transatlantic Great Awakening and its development in the United States through many challenges and cultural changes.” [2] This short book is written primarily for those who maintain an interest in the role of the evangelical movement throughout history. Defining “the evangelical movement is something the author states is quite diverse, he writes, “we are a people more remarkable for our differences than our
Elizabethan Theatre was so popular that everyone enjoyed it; even Queen Elizabeth. She influenced some of the plays performed in that time and people were honored to perform plays for her. Plays were very important back then and were a part of life. Theatre in the Elizabethan Era was very prominent, including Coriolanus, a tragedy by William Shakespeare, and could be attended by anybody.
Queen Elizabeth came to be known as one of the greatest rulers of the English empire. Under the reign of Queen Elizabeth I, a more efficient government was created. The church was unified, the English empire was expanded, and language, literature, and theater flourished to a greatness that would be impossible for almost any other period of English history, or any other European empire, for that matter, to match. Although there was a great rise in literature,it was theater that catapulted to greatness during Elizabeth's reign. Out of Elizabeth's era came Elizabethan theater. Elizabethan theater has such a variety of topics, that would make it virtually impossible to talk about in ten pages. The focal point of this paper will be on Queen Elizabeth's contributions to theater as well as her favor to Children of Paul's, or Paul's Boys (a "Boy Company") and the Queen's Men and Lord Chamberlain's Men (two Adult Companies). Prior to Elizabeth's reign, those members of the Tutor family enjoyed entertainment consisting mainly of court tournaments. Within these court tournaments bear baiting was the most popular event. Although "Elizabeth found this hugely diverting", theater was her entertainment of choice, for Elizabeth found "such cruel spectacles...an unattractive feature of the age" (Somerset 367). However, regardless of her opinion, countrymen saw nothing wrong with bear baiting, and continued the event. Even though Elizabeth was a great lover of theater, that does not mean that theater, was not put down routinely. The Puritans found Elizabeth's interest in theater to be "utterly reprehensible", actors to be a "contemptible breed", and the theaters that they performed in nothing more "...
When it comes to gamma-aminobutyric acid (GABA), we should recall that it acts as the main inhibitory neurotransmitter in the central nervous system (CNS) (Mihic and Harris 1997). Although there are three receptors in total, the focus of this paper will be on the interactions between GABA and the GABAA receptor, especially in the presence of alcohol. GABAA receptors are ligand-gated ion channels that allow for the entrance of chloride ions into the cell when opened (Davies 2003). These receptors are formed by five subunits out of a total of seven possible families (and even more subsets of these families) (Jacob et al. 2008).
The title of the novel—As I Lay Dying—suggests that there is a first-person speaker, which seemingly suggests that it is the voice of Addie Bundren, the dead mother. However, Addie actually communicates in the first person voice only once in the novel and besides the few beginning chapters, “she is dead, not dying” (Ross 305). As I Lay Dying is divided into fifty-nine sections and written in first person narrative with fifteen different viewpoints (Ross 300). Since there are fifteen different viewpoints, the point of view then shifts between each different narrator. Each narrator has a “unique, personal interpretation and reaction to the events of the novel” (Ross 301)...
1.) Gas Syringe 100cm³ - I chose this as it is easy to measure the
In order to understand how alcohol affects the the CNS we need to understand a little more about the GABAA receptor. The GABAA receptor is found at the postsynaptic dendrite which is the area of a nerve cell that receives chemical signals from its neighboring nerve cell. There is a whole network of nerves throughout the human body which are responsible for sending chemical signals to the brain. To do this they require ion channels that allow the passage of positive and negative ions into the nerve cell. These channels are made from integral membrane proteins that form a porin complex allowing a certain type of ion into the cell. The GABAA receptor is a ligand-gated channel which is made of five proteins, or subunits, called alpha, beta and gamma. This channel is responsible for the passive transportation of negatively charged chlorine ions
My aim in this piece of work is to see the effect of temperature on the rate of reaction in a solution of hydrochloric acid containing sodium thiosulphate. The word equation for the reaction that will occur in the experiment is: Sodium thiosulphate + hydrochloric acid →, sulphur + sulphur dioxide +. sodium chloride + water ? where the sulphur is an insoluble precipitate.
of Copper Sulphate. To do this I plan to work out the amount of water
Alcohol damages the pathways that connect different parts of the brain and can affect the way the brain looks and works. These pathways, when affected, can change a person’s mood and behavior, and not only make them an entirely different person, but also make it harder for them to think clearly an...