Essays Tagged: "Collision Theory"

Enzymes - Lactose-Free milk

being split into glucose and galactose by the lactase enzymes. This is due to the greater chance of collision between the enzyme and substrate because there would be more exposed enzyme molecules with ... ed enzyme molecules with smaller sized beads than larger sized ones.This theory is supported by the Collision Theory, which states that as the concentration of the substrate or the enzyme increases, t ...

(26 pages) 131 1 4.4 Feb/2003

Subjects: Science Essays > Biology

Varying rates of hydrolysis of the different isomers of Carbon, Hydrogen and Bromobutane.

of hydrolysis of the different isomers of Carbon, Hydrogen and Bromobutane.Scientific Research:The collision theory of bimolecular reactions in the gas phase was developed from the kinetic theory of ... cule of A must collide with a molecule of B before a reaction can occur. It has been shown that the collision frequency is proportional to the product. If every collision results in reaction, the rate ...

(4 pages) 41 1 3.5 Apr/2003

Subjects: Science Essays > Chemistry

Chemestry on sodiumthiosulphate turning hydrochloric acid milk.

mes.The rate of a reaction is defined as the speed at which the reaction takes place.Most molecular collisions do not result in chemical change. Before any change takes place on collision, the collidi ... ortions of them have the required activation energy to react. The increased chance of higher energy collisions greatly increases the speed of the reaction.The Collision TheoryIn order for a reaction t ...

(12 pages) 40 0 3.0 Jul/2003

Subjects: Science Essays

Investigating Some Factors Which Affect the Rate of Reaction.

les to react, they must be colliding with each other with a sufficient impact. This is known as the Collision Theory. To increase the rate of reaction, the number of collisions between the particles m ... articles a surface, which it can stick to and collide with each other. This increases the number of collisions. Activation energy is the amount of energy needed to break old bonds and allow the reacta ...

(3 pages) 69 0 4.8 Oct/2003

Subjects: Science Essays > Chemistry

Chemistry, the effects of acid rain includes experiment with marble chips.

ly the same as the concentration\temperature is increased. This can be justified by relating to the collision theory. When the temperature is increased the particles will have more energy and thus mov ... olutions of reacting particles are made more concentrated there are more particles per unit volume. Collisions between reacting particles are therefore more likely to occur. All this can be understood ...

(2 pages) 29 0 3.0 Nov/2003

Subjects: Science Essays

GCSE Chemistry - Sodium Thiosulphate Coursework

reaction to take place. There is five factors which affect the rate of a reaction, according to the collision theory of reacting particles: temperature, concentration (of solution), pressure (in gases ... ly the same as the concentration\temperature is increased. This can be justified by relating to the collision theory. When the temperature is increased the particles will have more energy and thus mov ...

(10 pages) 83 1 4.1 Jan/2004

Subjects: Science Essays > Chemistry

Effect of tempreature on sodium thiosulphate

nd Preliminary Results.There are five factors which affect the rate of a reaction, according to the collision theory of reacting particles: temperature, concentration (of solution), pressure (in gases ... d alter the outcome of the experiment. A reaction, basically, takes place when there are successful collisions between the particles of the reactants involved. The more energy that is present in react ...

(7 pages) 47 0 3.0 Mar/2004

Subjects: Science Essays > Chemistry

To study how concentration affects the rate of a reaction.

The Collision TheoryFor particles to react, they must collide. They must also collide with enough energy ... e temperature increases the particles start to all move quicker. This means that there will be more collisions and more energy will be given out.*Concentration - If a solution is highly concentrated i ... s that as the concentration of the acid increases, the reaction gets stronger. This is because more collisions take place in a highly concentrated acid. These figures prove this theorem to be correct: ...

(4 pages) 51 0 2.2 Mar/2004

Subjects: Science Essays > Chemistry

How Does Hydrochloric Acid Affect The Time Of Magnesium to Dissolve?

eactant makes the reaction faster (providing all of it is in contact with the others) (reactant)The Collision Theory:A theory to explain reaction speeds.Reactions can be speeded up or slowed down. Thi ...

(6 pages) 54 1 3.5 Apr/2004

Subjects: Science Essays > Biology

Reaction (rate) between magnesium ribbon and hydrochloric acid

the mass and the surface area of the magnesium strip. This is all true because they all link to the collision theory of particles colliding with enough energy to make a reaction. It is based on the id ... articles have to hit each other hard enough to break or form new bonds. This is called a successful collision. When particles get stimulated or increased in number, the reaction will increase in rate ...

(9 pages) 37136 0 3.0 May/2004

Subjects: Science Essays > Chemistry

What factors affect the rate of the decomposition of hydrogen peroxide with a fixed mass of catalyst?

rogen peroxide and manganese oxide decompose.The prediction we have just made has been based on the collision theory-'Chemical reactions occur when particles of the reactant collide with enough energy ...

(7 pages) 39 0 4.0 Jul/2004

Subjects: Science Essays

How the rate of reaction changes in a reaction between Hydrochloric Acid and Sodium Thiosulphate

, 1.5, 1, 0.5, 0.25 Molar acid. In our experiment, we are reacting it with sodium thiosulphate. The collision theory will be involved in this, for instance the more concentrated the acid we use, the f ... will occur and the lower the concentration the slower the reaction will occur, this is because the collision theory says that if something is more concentrated then it will collide more because there ...

(4 pages) 58 0 3.6 Jul/2004

Subjects: Science Essays > Chemistry

Experiment to investigate the heat released during a displacement reaction

ever I also predict that the increase will gradually get less and less. I think this because of the Collision Theory for the first part of the prediction, which states as I stated. This is because the ... actions that happened (there was no metal salt). Then at 20%, there was more heat given off, due to Collision Theory. This theory states that the rate of reaction is higher when there is a greater con ...

(5 pages) 60 3 2.8 Oct/2004

Subjects: Science Essays > Chemistry

The effects of change in concentration on the rate of reaction between Sodium Thiosulphate and Hydrochloric Acid.

tion energy barrier is more likely to be overcome when particle with greater energy react therefore collisions are more likely to occur. This can be justified by relating to the Collision theory, whic ... on yields an increase in reaction rate, because more reactant molecules are present, therefore more collisions.-The hypothesis is that as the concentration of sodium thiosulphate is increased, the rea ...

(7 pages) 42 0 4.5 May/2005

Subjects: Science Essays > Chemistry

The speed of chemical reaction between Calcium carbonate and Hydrochloric acid

ay how I think the concentration of acid effects the speed of a reaction. I will do this by using:. Collision theory. Kinetic theory. Diagrams. GraphsIn this diagram the particles In this diagram the ... ults that I got, I can see that the higher the acid concentration the more gas is given.Kinetic and Collision theory:In this diagram the particles In this diagram the particleshave a low concentration ...

(3 pages) 29 0 3.0 Aug/2005

Subjects: Science Essays > Chemistry

G.C.S.E chemical reaction - rates of reaction between sodium thiosulphate solution and hydrochloric acid.

The theory that we use to explain how different variables change the rate of reaction is called the collision theory. For a reaction to take place, the particles of the substances that are reacting ha ... particles of the substances that are reacting have to collide. Only a certain fraction of the total collisions cause chemical change; these are called "successful collisions". The successful collision ...

(8 pages) 78 0 5.0 May/2006

Subjects: Science Essays > Chemistry

Rate Of Reaction Investigation

the rate of reaction will increase as the concentration of acid increases. I know this because the collision theoryEquipment:* 15 Test Tubes* 1 Measuring Cylinder* Safety Goggles* 1 Test Tube Rack* 1 ...

(4 pages) 23 0 3.5 Nov/2006

Subjects: Science Essays > Chemistry

How A Reaction With Hcl Effects Reaction Times

I will be looking at how the concentration of acid affects reaction rates, this all relates to the collision theory which states: "When particles of one substance have enough energy to collide with t ... perature: when increased the particles move faster, which means these particles take a part in more collisions.Concentration: If the solution has a higher concentration it means there are more particl ...

(2 pages) 16 0 0.0 Aug/2001

Subjects: Science Essays > Chemistry

Reaction rates of Mg mixed with 2HCl

recording how fast one of the reactants disappears. A theory used for the rate of a reaction is the collision theory. It states that the more collisions of molecules, the more combinations, and the re ... more collisions of molecules, the more combinations, and the reaction will be faster. The number of collisions in a reaction is not always the same. They will be different according to what substance ...

(4 pages) 19 0 3.0 Sep/2007

Subjects: Science Essays > Chemistry

The Chemistry of Fireworks

ions are highly reactive because they can generatehigher temperatures and produce brighter light. (Collision Theory -see table 2)Collision Theory(Temperature)"As the temperature of the reaction mixtu ... the reaction mixture is increased, the averagekinetic energy of reactant particles increases. More collisions inunit time have energy in excess of the activation energy and thereforethere are more pr ...

(11 pages) 12 0 0.0 Oct/2009

Subjects: Science Essays > Chemistry