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Test Tube Degrees Celsius
1,267 wordsEnzyme Action: Testing Catalase Activity Enzymes are proteins that serve as catalysts and accelerate chemical reactions in living organisms. Enzymes accomplish this by lowering the energy of activation of the organism it is acting upon, however enzymes will only lower the energy of activation for specific organisms, reducing chaotic chemical reactions. The reaction is carried out in its entirety in the active site of the enzyme. The substrate (organism acted upon), binds itself into the active s...
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Rate Of Reaction Bunsen Burner
1,230 wordsInvestigate A Factor Which Affects the Rate Of Fermentation Of Yeast This experiment is investigating one of the factors which affects the rate of fermentation of yeast. Several factors affect the rate of reaction: &# 61656; Increasing the concentration. (See the lock and key theory. ) If the substrate (glucose) is increased, then there would be more keys for the locks, therefore an increase in reactant concentration leads to an increase in reaction rate. &# 61656; The surface area, the bigger t...
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Rate Of Reaction Carbon Dioxide
1,229 words... onward sources, from a textbook, encyclopedia, and preliminary work that I have done in class. I have shown my results on a bar chart and a line graph. On the line graph, I have drawn a curve of best-fit. There were no anomalous results. From my results, and my graph, I have found out that as the temperature of the enzymes (yeast in this case) is increased, the rate of reaction speeds up. However, when the temperature reached a certain point, (about 40 degrees Celsius), the enzymes became de...
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Liquid Nitrogen Surface Area
1,858 wordsIntroduction Background and Theory. Experimental Procedure. Results and Discussion Conclusions and Recommendations Nomenclature... References B. Equipment Diagram... The hydrogenolysis of ethane on a nickel on kieselguhr catalyst has only been conducted using a cylindrical pellet shaped catalyst of unknown surface area. We used a powdered version of this catalyst and compared its performance with that of the pellet catalyst. This comparison was conducted using one gram of catalyst in each reacto...
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Carbon Dioxide Directly Proportional
1,251 words... le then existed he could not, and did not, determine the relationship between degree of hotness (temperature) and volume of a gas quantitatively. (Siebring, Richard, Page 32) Guillaume Amontons (d. 1705) developed the air thermometer, which uses the increase in the volume of a gas with temperature rather than the volume of a liquid. The air thermometer is an excellent demonstration of Charles' law because the atmosphere maintains a fixed downward pressure above a small mercury plug of consta...
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Rate Of Reaction Hydrochloric Acid
1,993 words4 Results for temperature and concentration on Tables 5 Graph for results for rate of reaction against temperature 6 Graph of results for rate of reaction against time 8 Graph and table of typical results This investigation is about Rates of Reaction and what affects them. In this case I am going to look at hydrochloric acid and sodium thiosulphate, which is a precipitation reaction. I will be investigating whether a change in temperature affects the rate of reaction. Sodium thiosulphate and hyd...
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Polar Bears Body Temperature
1,467 wordsFirst of all we need to understand what ectothermic and endothermic animals are. Animals differ in their abilities to regulate body temperature (thermo regulation). We sometimes use the terms "cold-blooded" or "warm-blooded. " Most reptiles feel cold to the touch, while mammals and birds often feel warm. Somewhat more precise descriptions can be made by using the terms poikilothermic and homoiothermic. The body temperature of poikilotherm is relatively variable, while that of homeotherm's is rel...
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Rate Of Reaction Hydrogen Bonding
2,165 wordsRESEARCH I know that Rennin is an enzyme, so before conducting this experiment I am first going to do some research into enzymes and their effects. 1. Enzymes Enzymes are large globular molecules of which the vast majority are protein in nature, though some, known as 'ribozyme's' are made of RNA. Enzymes have catalytic properties; in other words, they alter the rate of reaction without themselves undergoing a permanent change. Most chemical reactions require an initial input of energy, called ac...
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Rate Of Reaction Time It Takes
2,287 words... on to use ice and water baths, heated or cooled to different temperatures to achieve the correct temperature in the enzyme and substrate. 16. Plan for pH I am going to use the three categories of acid, neutral and alkaline to test how pH affects the rate of the enzyme rennin. Whilst studying the affects of varying the pH, I am going to ensure that all other variables are constant. Therefore, I will continue to use 2 ml of milk and 4 drops of rennin. The temperature I shall conduct these expe...
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Volcanic Eruptions Greenhouse Gasses
8,580 wordsThis Climatic Change I. SUMMARY: This paper looks at the controversial issue of climatic change. In particular, it develops the question of if and why earth? s climate is changing? The roles of man, naturally occurring trends, and earth? s cycles are considered, and an outlook for what can be expected in the near and distant future is given. ? The uneasiness of modern man arises from a rupture between himself and nature that leaves him homeless within the universe? William Barrett II. INTRODUCTI...
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Amount Of Water Important To Understand
2,002 wordsMeteorology classically defined as the science that deals with the phenomena of the atmosphere, especially weather and weather conditions, is a fairly new science that is practiced by Meteorologists. They are people who interpret weather information from local weather observers, balloons, satellites, and weather stations around the world. In more common vernacular, a Meteorologist reads weather maps, predicts and records weather from atmospheric occurrence. The part of Meteorology that will be d...
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Fatty Acids Petri Dish
4,956 wordsPlan The initial variable to be considered will be the effect that caffeine and temperature has on the heart beat and if it has a direct or indirect effect on the daphnia's lifespan. If there is enough time to consider a second variable however, the effects of a temperature or alcohol on the daphnia's body system will also be considered alongside the initial variable of caffeine. These will then be slotted into the same graph which will show us how the figure correspond to the results. In order ...
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Degrees Celsius Test Tubes
1,993 wordsEffects of Temperature, pH, and Gelatin on Bromelain Introduction Bromelain is an organic catalyst that speeds up the rate of chemical reactions. Bromelain is used in this experiment to catalyze the break down of proteins and is called a proteolytic enzyme. Enzymes enable reactions to occur at a lower temperature and energy levels. This allows many reactions to occur inside living organisms that would otherwise have been impossible to take place. This enzyme is found in fruits, leaves, and stems...
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Carbon Atoms Specific Heat
4,299 wordsI am going to investigate the difference in enthalpy of combustion for a number of alcohols, the enthalpy of combustion being the enthalpy change when one mole of any substance is completely burnt in oxygen under the stated conditions. I will be attempting to find how the number of carbon atoms the alcohol contains effects the enthalpy change that occurs during the combustion of the alcohol. Method I plan to measure the enthalpy change by burning the alcohol, using a spirit burner, I will then u...
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Million Years Ago Mass Extinction
10,014 wordsEarth probably began Extinction Introduction Earth probably began about 4. 5 billion years ago. A history of this life on Earth is recorded in fossil remains and traces of past life. It is a record of evolution for both life and the planet. Life and the planet have co-evolved, with life causing changes to the planet which in turn drive changes in life. The Fossil Record A history of these changes is recorded in the layers or strata of rock laid down over the millions of years, and by changes in ...
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Natural Greenhouse Effect Average Global Temperature
3,796 wordsFire is Fire 2 Introduction Fire is a topic on which most people can comment. Fire is a widespread phenomenon. Most of us have seen fires in natural vegetation, or their effects; stark, blackened vegetation or a smoke pall. Because fires such as these can have damaging economic and social effects, can spoil forestry timber, can burn down houses and farms, and can kill people and animals, there has been a lot written about wildfires. Added to this wide perception of the damage that can be caused ...
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Rate Of Reaction Calcium Carbonate
2,367 wordsInvestigation Into The Relationship Between Temperature Of Investigation Into The Relationship Between Temperature Of Acid And The Rate Of Reaction In The Reaction Of Caco 3 And Hcl Background Information The speed at which reactants are converted into products during a reaction is referred to as its rate. Usually in a reaction, the amount of the product of the reaction is measured to work out the rate of the reaction. In this reaction, the rate will be calculated by the equation: Rate = 1 Time....
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Time Of Death Crime Scene
3,316 wordsInvestigative Techniques to Determine Time of Death One of the first steps involved in a homicide investigation is the determination of the time of death. While knowing the time of death is not crucial in each and every homicide case, it can be of significant importance in some. Except for a bullet passing through a victims head and striking a clock in the same room, determining time of death is not an exact science. However, there are a number of different indicators, most of which are evaluate...
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Specific Heat Heat Energy
1,675 wordsMechanical Equivalent of Heat By: A. D. Haynes [Abstract / Introduction ] Long before physicists recognized that heat is a form of energy transfer resulting from the random microscopic motion of atoms, they defined heat in terms of the temperature changes it produces in a body. The traditional unit of heat is the calorie (cal), which is the amount of heat needed to raise the temperature of 1 g of water by 1 &# 730; C. The kilocalorie is 1000 cal: 1 kcal = 1000 cal. Incidentally, the calories mar...
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Liquid Nitrogen Liquid Hydrogen
1,519 wordsCryogenics and the Untitled Cryogenics and the Future Cryogenics is a study that is of great importance to the human race and has been a major project for engineers for the last 100 years. Cryogenics, which is derived from the Greek word keys meaning " Icy Cold, " is the study of matter at low temperatures. However low is not even the right word for the temperatures involved in cryogenics, seeing as the highest temperature dealt with in cryogenics is 100 (C (- 148 (F) and the lowest te...
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