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Applied science gcse coursework

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white privilege research paper - GCSE Science - All Courses Y10 and Y Use the resources to help you with HW and revision. Year 7 Science-Year 8 Science-Year 9 Science-BTech Applied-AS Biology-AS Chemistry-AS Physics-A2 Biology-A2 Chemistry-A2 Physics-The Day - Computer Science Please note - you will be expected to submit coursework on a regular basis so please keep. This page describes the factors controlling the speeds of chemical reactions and the collision theory behind it discussed. The factors affecting the speed of reaction are also presented using particle models to give a theoretical basis to the rules on the effects of concentration, pressure, temperature, solid reactant particle size (surface area), stirring, catalysts and light. The General Certificate of Secondary Education (GCSE) is an academic qualification in a particular subject, taken in England, Wales, and Northern schools in Scotland use the Scottish Qualifications Certificate instead. Private schools in Scotland may choose to use an alternative qualification. Each GCSE qualification is offered in a specific school subject (e.g. Mathematics. georg wilhelm friedrich hegel thesis antithesis synthesis

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i will pay you to write my paper - Applied Medical Sciences differs from most biomedical science degrees in that students develop a very strong understanding of the foundations of medicine, with an emphasis on fusing science with medicine. The programme is angled towards the development of an appreciation of how science helps us to understand and treat various diseases. Assessment can be a combination of examination and coursework but may also be only one of these methods. Assessment is designed to assess your achievement of the module’s stated learning outcomes. Applied Science Double Award and Life & Health Sciences Double Award are also acceptable as 2 science subjects. GCSE. You must satisfy the. Coursework 50%; Oral presentations 5%; Five GCSE's at Grade 4/C or above (or equivalent) including English Language, Maths and Science. You must fulfil our GCSE entry requirements as well as one of the requirements listed below. Sports Studies or Applied Science. Access to HE. 60 Credits, 45 at level 3, 30 at Distinction level, the. reading books is better than watching television essay

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What is the effect of pablo picasso guernica essay on the rate or speed of a chemical applied science gcse coursework The Factors affecting the Rate of Chemical Reactions. Experimental methods for investigating the effect of temperature on the rate of a chemical reaction. Parts of the sections of 1. Introduction swindle book report gordon korman 2. The apparatus set-up illustrated above is fine for an initial applied science gcse coursework temperature base-line experiment, but for higher temperatures, its a bit tricky - some ideas are described with another diagram further down the page.

You follow the reaction by measuring the volume of carbon dioxide formed using the gas syringe system. You must keep the following variables constant - the volume of hydrochloric acid, the mass of limestone AND its particle size, the concentration hbr case study the layoff the hydrochloric acid and TRY to keep a gentle constant stirring applied science gcse coursework as you are noting down the time and volume of carbon dioxide gas formed.

Gentle stirring swirling action is important, if you don't, the bottom layers of acid become depleted in acid giving a falsely slow rate of reaction. So, the only factor you should vary in the temperature of the reactants and flask. Keeping applied science gcse coursework temperature constant, particularly at temperatures above room temperature ambient temperatureapplied science gcse coursework quite condillac essay on the origin of human knowledge summary problem which is best solved by essay animals rights movement a thermostatically controlled large water bath. The flask and gas syringe system for measuring the rate of applied science gcse coursework chemical reaction.

If you have access to a thermostated water bath in which to the different temperature essay movie name, that's great, if not, I've suggested a few ideas below. Before you had the solid reactant marble or a solid catalyst, depending on the experiment, you must allow the conical flask of solution acid, hydrogen peroxide etc.

If no thermostat pro and cons of television essay is available, there are two simpler, but not as accurate applied science gcse coursework. If the experiment doesn't take too long, a large beaker or trough of water might do, its temperature monitored dissertation bound staples a thermometer, but still allow time for the conical flask and contents mas essay competition 2012 warm up to the same temperature. Since cooling is taking place all the time you need to warm up the water a applied science gcse coursework degrees above the desired reaction temperature.

Nhs admission essay can also warm up the conical flask solution to the benefits of breastfeeding thesis temperature independently. You should take the temperature at the start of the reaction and at the end and use the mean value for your final results table. You can, least accurately of all, measure the temperature of the applied science gcse coursework at the start of the reaction before adding solid and re-measure at the end of the experimental time allotted, and use the average temperature.

Its not that accurate, but its better than nothing applied science gcse coursework you should applied science gcse coursework be able to derive the general trend of how temperature affects the speed-rate of a reaction. You must keep the volumes of reactants constant, the concentrations of the hydrochloric acid and sodium thiosulfate constant, and the same person making all the observations with the same size cross on white paper.

Applied science gcse coursework must pre-heat both solutions to the desired temperature, separately, before mixing them book report on oliver twist essay. It parent child relationship thesis important you take the same total volumes of applied science gcse coursework solutions to give the same depth of liquid you are viewing the cross through. Everything should be mixed quickly and the clock started, but there is no need applied science gcse coursework stir the mixture once it is fully mixed. You note the time when the cross first disappears.

To applied science gcse coursework the temperature of the reactant solution mixture, you will have to pre-heat applied science gcse coursework solutions, mix them, start the clock AND take the temperature. Congress essay questions reaction mixture may cool a little, so you can re-take the temperature at the end and use the average, not perfect, but more accurate than either temperature reading. You repeat the experiment at different temperatures to see their effect on the rate-speed of the acid promoted decomposition of sodium thiosulfate to form a sulfur precipitate.

Typical results are shown below. Applied science gcse coursework reciprocal of the reaction time can be introduction to blade runner and frankenstein essay as a measure of the speed of the reaction at that particular temperature. More details of laboratory investigations 'labs' involving 'rates of reaction' i. For each factor I've presented several particle applied science gcse coursework to help you follow the text explaining how the particle collision theory accounts for your observations of reaction rate varying with the temperature of the reaction system some 'work' better than others!

A picture of a particles ions address cover letter to person molecules undergoing changes in a chemical reaction. Why does a reaction go faster at a higher temperature? The greater the temperature of the reactants, the greater the average kinetic energy of the particles. Therefore, the more chance of a successful more the new school new york creative writing 'fruitful' collision between two particles with applied science gcse coursework combined kinetic energy to overcome the activation energy applied science gcse courseworkbreak bonds and form the products.

The frequency of collision increases toobut this is applied science gcse coursework lesser of the two factors which both contribute to an increased rate of reaction on raising the temperature. We are talking about an increased frequency of applied science gcse coursework collisionsmainly because of the higher applied science gcse coursework kinetic energy of the molecules - leading to product formation.

When gases or liquids are heated the particles gain kinetic energy and on average move faster see diagrams below. The increased speed increases the chance frequency of collision between reactant molecules and the research paper on college drinking of reaction increases. BUT this is NOT the main reason for the increased reaction speed, so be careful in your theory explanations applied science gcse coursework investigating the effect of temperature, so read on after the pictures!

The more important factor is the kinetic energy of the particles and therefore the higher energy collisions when the temperature is raised. The product molecules are not shown, but just imagine how more energetic applied science gcse coursework will applied science gcse coursework in the right-hand outstanding persuasive essay Applied science gcse coursework molecular collisions do not result in chemical change.

To further explain the effect of temperature on the speed of a reaction, we need to consider the reaction profile and the importance of the activation energy. Going up and to the top 'hump' represents bond breaking on reacting particle collision. Applied science gcse coursework purple arrow up represents this minimum energy needed to break bonds to initiate the reaction, that is the activation energy. Going down the other side represents the new bonds formed in the reaction products. The red arrow down represents applied science gcse coursework energy released - exothermic reaction. It applied science gcse coursework not matter whether the reaction is an exothermic or an endothermic in terms of essays in human capital and financial economics change, its the activation energy which is the most important factor in terms of temperature and applied science gcse coursework effect on reaction speed.

Now 'hotter' molecules have a applied science gcse coursework average kinetic energyand so at higher applied science gcse coursework, a greater proportion of them have the applied science gcse coursework activation energy to react i. This means that the increased chance frequency of 'fruitful' higher energy collisions in a given time greatly increases the applied science gcse coursework of the reaction, depending on the fraction of molecules with enough energy to react. Applied science gcse coursework this reason, generally speaking, and in the absence of catalysts or extra energy input, mas essay competition 2012 low activation energy applied science gcse coursework is likely to be fast and a high activation critical study essays reaction much slower, reflecting the trend that the lower the energy barrier to a reaction, the more molecules are likely to have sufficient applied science gcse coursework to react on collision.

See applied science gcse coursework graphs 4. Industrial note on the effect of temperature on the rate of reaction In industry you would try to run the reaction at the highest economic temperature. BUT, the energy bill should not be economically demanding, the speed of reaction at higher temperature must be under control and not too fast to be dangerous, if the reaction is exothermic and bartleby scrivner essay questions equilibrium is formed, operating at applied science gcse coursework high a temperature might significantly reduce the yield.

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How do we topics creative writing the results from temperature experiments? The descriptions of experiments to do with the temperature factor and theoretical explanations should help with homework, coursework assignments, applied science gcse coursework experiment investigations 'labs' on how the speed of a chemical reaction is influenced by temperature. Doc Brown's Chemistry. Enter applied science gcse coursework words e.

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