| 1. | Reaction to the Old Testement
I thought the Hebrew Bible was very interesting. I grew up in a Roman Catholic family, so I have heard all the stories from the Bible through Church and CCD class (Sunday School). I never actually sat down and read the Bible. I just thought all it talked about was sacrifice to God and how to be a go...
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| 2. | Rates of reaction
Rates Of Reaction Coursework
What is a reaction? A reaction is when 2 particles (reactants) join to form a new product. ...
What is the rate of a chemical reaction? The rate of a chemical reaction is how fast the reactants react.
For a reaction there must be a successful collision. ... Th...
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| 3. | investigation
Using the iodine clock method and colorimetry to find the order of reaction and the rate of reaction and investigating the effect of concentration and temperature on the rate of reaction Action plan: Discuss the methods for determining the order of reaction and the rate of reaction Colorimetry Find ...
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| 4. | Displacement reaction
Science Investigation
Displacement Reaction
Aim:
To find out how much heat is given out of a displacement reaction, when using different metals.
Background Knowledge:
Displacement reaction is when one substance forces out another substance and takes it place. ... A displacement reac...
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| 5. | Rates of Reaction Not very good
What affects the rate of reaction? ... Chemical kinetics is the study of reaction rates, it shows that three things that must be right at the molecular level if the reaction is to occur. ... Not all collisions have this energy, but some are more likely to at higher temperatures. ... Though if one...
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| 6. | Rates of reaction
...
There are four factors that affect the rate of reaction:
1 - Temperature. ... They will collide more frequently increasing the rate of reaction. ...
Catalyst:
Addition of a catalyst increases the rate of reaction as it reduces the activation energy of the reactants. The catalyst ...
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| 7. | Catalysts
Table of results from experiment Name of chemical Colour / texture Reaction when added to Hydrogen peroxide When tested for Oxygen When tested for Hydrogen When heated When heating test for Oxygen When heating test for Hydrogen Hydrogen Peroxide Clear Liquid N/A No reaction No reaction No reaction N...
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| 8. | Grignard Reaction
Grignard Reaction
Introduction:
The purpose of this experiment was to make a Grignard reagent by reacting bromobenzene with Mg in dry ether. ... 25g of Mg) This reaction was initiated by an ultrasonic water bath. Sonicating the mixture causes high pressure and low pressure points causing th...
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| 9. | Reaction Types
Intro:
A reaction is a chemical transformation due to the interaction of chemical entities. There are four basic types of chemical reactions: synthesis, single replacement, double replacement, and decomposition. ... In a single-replacement reaction, one element replaces the second element in a c...
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| 10. | How does concentration affect the time a reaction takes to complete
Introduction
I am going to do an experiment to find out how the concentration of a base affects its reaction time with an acid. ...
Prediction
I predict that as I use less and less sodium thiosulphate in my solution the reaction will take longer to happen. ... The collision theory says that a...
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| 11. | How does temperature affect the rate at which trypsin works
Investigation coursework
Aim: we want to investigate the effects of temperature on the rate of reaction. We want to see the reaction between protein and trypsin. ... (insoluble in water)
Diagram of the photographic film:
...
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| 12. | Sports drinks and reaction times
Do Sports Drinks Affect Reaction Times ? ... Pillay
Purpose
To determine how sports drinks affect reaction time.
Hypothesis
I believe that yes sports drinks do affect reaction times. I also believe that the type of exercise that is done will have a greater affect on how the sports drink wo...
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| 13. | Chemistry Rate of REaction
Aim: To find the effects of the concentration of hydrochloric acid on the rate of reaction on marble chips. ...
Marble chips can dissolve in acids; if the concentration of the acid is varied then the speed of the reaction will either slow down or speed up.
All substances are made out up of parti...
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| 14. | Experiment to study the Effect of a catalyst on the rate of reaction
Hypothesis
The Collision Theory says that the role of a catalyst is to provide the reaction with an extra, alternative pathway for the reaction to occur; the activation energy for this alternative pathway is less than the activation energy for the reaction without the catalyst. As a result, more ...
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| 15. | Rate of Reaction
Introduction
The rate of a reaction is the speed at which reactants are converted into products. Experiments show that for most reactions, the concentrations of all participants change the most rapidly at the beginning of the reaction. That is, the concentration of the products shows the greatest...
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| 16. | enthalpy change of reaction
To determine the enthalpy change of a reaction
Calcium carbonate, CaCO3 decomposes with heat.
CaC03(s) CaO(s) + CO2 (g)
The aim of this practical is to determine the enthalpy change for this reaction by an indirect method based on Hess’s law. ... Energy (enthalpy)...
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| 17. | what affects rates of reaction
How do different factors affect the rate of reaction with
Limestone and hydrochloric acid?
Aim
My aim is to find out how concentration, temperature and surface area affect the rate of reaction between limestone and hydrochloric acid.
Concentration
Prediction
I predict that as the co...
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| 18. | rateof reaction
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Sodium + Hydrochloric Sulphur + Sulphur + Sodium
thiosulphate acid dioxide chloride
solution
Variables: Concentration of So...
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| 19. | Plan
Introduction: The rate of reaction tells us how quickly a chemical reaction happens. It is important for people in industry to know how fast a reaction goes. During a reaction we can measure how much reactant is used up in a certain time. On the other hand we might choose to measure how much product...
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| 20. | What are the factors affecting the Rate of Reaction between hydrochloric acid and Sodium Thiosulphate
What are the factors affecting the Rate of Reaction between hydrochloric acid and Sodium thiosulphate?
Na2S2O3 (aq) + 2HCL (aq) → 2NaCL (aq) + H2O (l) + SO2 (g) + S (s)
Sodium thiosulphate + Hydrochloric Acid → Sodium Chloride + Water + Sulphur Doixide + Sulphur
This is the chemi...
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