Essays Tagged: "reactant"

Lab report on enzyme activity.

with a certain substrate. Without enzymes, the process of metabolism would be hopelessly slow. The reactant an enzyme acts on is referred to the enzyme's substrate. The enzyme will combine with or to ...

(4 pages) 566 0 4.6 Apr/2003

Subjects: Science Essays > Biology

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

t has been found to apply to reactions in solution. Although solvent molecules prevent molecules of reactant coming together as frequently as they would in the gas phase, once they have come together, ... the detail during the course of a collision. It follows the energy and orientation of the colliding reactant molecules and then seeks an explanation as to why such a small portion of collisions result ...

(4 pages) 41 1 3.5 Apr/2003

Subjects: Science Essays > Chemistry

Chemestry on sodiumthiosulphate turning hydrochloric acid milk.

ge rate of a chemical reaction, over a certain time, is equal to the change in concentration of the reactant or the product divided by the time taken. Which method you use depends on the type of react ... suddenly cooling the mixture. You then perform a titration to find the concentration of one of the reactants or one of the products. If you do this at regular intervals, you can determine the rate at ...

(12 pages) 40 0 3.0 Jul/2003

Subjects: Science Essays

GCSE Chemistry - Sodium Thiosulphate Coursework

ction, and the effect different changes have on them. The rate of reaction is the rate of loss of a reactant or the rate of formation of a product during a chemical reaction. It is measured by dividin ... ing particles: temperature, concentration (of solution), pressure (in gases), surface are (of solid reactants), and catalysts. I have chosen to investigate the effect temperature and concentration hav ...

(10 pages) 83 1 4.1 Jan/2004

Subjects: Science Essays > Chemistry

Chemisty review on mass/matter and seperating mixtures

ral gasII- Chemical reactions - law of conservation of energy- matter cant be created nordestroyed.-Reactant- left, starting-Product- right, end-Endothermic reaction- absorb heat (candle)-Exothermic r ...

(1 pages) 30 0 4.3 Mar/2004

Subjects: History Term Papers > North American History

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

m to dissolve.Theory:Rates of Reaction -Factors that alter speed of reactions.1. The temperature of reactants: reactions are faster when the temperature is raised, and slower if the temperature drops. ... en the temperature is raised, and slower if the temperature drops.2. The concentration of dissolved reactants (that is how much of the reactant is dissolved in a particular volume of solvent): reactio ...

(6 pages) 54 1 3.5 Apr/2004

Subjects: Science Essays > Biology

Chemistry Definitions

etc...Volume: The amount of space occupied by a three-dimensional object as measured in cubic units.Reactant & Product: Na (reactant) + Cl (Reactant) = NaCl (product)Corrosion Reaction: A reaction ...

(1 pages) 50 3 3.8 May/2004

Subjects: Science Essays

Investigate the amount of energy released when different fuels burn

that is involved in burning alcohols is exothermic because heat is given out. From this reason the reactant energy is higher than that of the product.The energy is given out when forming the bonds be ...

(5 pages) 35 0 0.0 May/2004

Subjects: Science Essays > Chemistry

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

ve just made has been based on the collision theory-'Chemical reactions occur when particles of the reactant collide with enough energy' (John Holman page 225). If the concentration of the solution is ... ion because we thought that to ensure our catalyst mass was suitable we needed to see what the most reactant experiment would be like. However, 1g of manganese oxide seemed to be too much as the amoun ...

(7 pages) 39 0 4.0 Jul/2004

Subjects: Science Essays

Combustion Of Alcohols

=O] + 3[H-O-H] | | H HThis reaction is exothermic, as heat is given out. This is because the amount reactant energy is more than the product energy the difference between this is ?H, therefore some en ... sure, the heat flow is exactly equal to the difference between enthalpy of products and that of the reactants", or: Qp = Hp - Hr = ?H Where Qp is the heat flow at constant pressure, Hp is heat energy ...

(9 pages) 36 0 3.3 Jan/2005

Subjects: Science Essays > Chemistry

Thermochemistry

or absorbed.Laws of Thermochemistry1. The magnitude of H is directly proportional to the amount of reactant or product.-Thus H can be used as a conversion factor in a balanced equation to obtain amou ...

(3 pages) 20 0 0.0 Mar/2005

Subjects: Science Essays > Chemistry

Thermochemistry

or absorbed.Laws of Thermochemistry1. The magnitude of H is directly proportional to the amount of reactant or product.-Thus H can be used as a conversion factor in a balanced equation to obtain amou ...

(3 pages) 28 0 0.0 Mar/2005

Subjects: Science Essays > Chemistry

Rates of reactions

ors affect the rate of a reaction.IntroductionWhat is a reaction? A reaction is when two particles (reactants) join to form a new product or products.What is rate? Rate is a measure of how fast or how ... even days.What is the rate of a chemical reaction? The rate of a chemical reaction is how fast the reactants react.How to find the rate of a reaction? In general to find the rate of a reaction, you s ...

(6 pages) 36 0 4.4 Jul/2005

Subjects: Science Essays > Chemistry

Rate of reaction of sodium thisolphate

rate of reaction because if the solution is made more concentrated it means there are particles of reactant knocking about between the water molecules. This makes collisions between the important par ...

(1 pages) 1151 0 1.0 Mar/2006

Subjects: Science Essays > Chemistry

The environmental factors that effect turnip peroxidase

s which increase reaction rates by lowering the activation energies of substrates. A substrate is a reactant that interacts with the enzyme. The enzyme and substrate can be viewed as the recently disc ... h suggests enzymes are flexible and dynamic things that change their shape so all these substrates (reactants) can become catalyzed when the activation energy is lowered and the reactions happen a lot ...

(8 pages) 124 0 3.7 Oct/2006

Subjects: Science Essays > Environmental Science

The Chemistry of Copper: AP Chemistry Lab Report

ations, all reactions and side reactions written out with qualitative data beneath each product and reactant except H20, and a summary.The purpose of this experiment is to observe the qualitative aspe ...

(2 pages) 38 0 4.3 Oct/2006

Subjects: Science Essays > Chemistry

Rate Of Reaction Investigation

ing Cylinder* Safety Goggles* 1 Test Tube Rack* 1 Stop Clock* Scissors* Ruler* Water basin* ScissorsReactants:The reactants I am going to use are:1.0M, 1.25M, 1.5M, 1.75M and 2.0M of Hydrochloric Acid ... chloric Acid Concentrations. These are the concentrations I have decided to use. Along with it, the reactant will also be 15 Strips of Mg, Magnesium measuring 2cm each.Method:1. Set up the necessary e ...

(4 pages) 23 0 3.5 Nov/2006

Subjects: Science Essays > Chemistry

Reaction rates of Mg mixed with 2HCl

ng at and testing is neutralisation. This reaction occurs when an acid reacts with a base. The base reactant should be neutralized. In this case the acid is reacting with a metal, magnesium. The magne ... bining at a lower speed. A way of measuring the rate of a reaction is recording how fast one of the reactants disappears. A theory used for the rate of a reaction is the collision theory. It states th ...

(4 pages) 19 0 3.0 Sep/2007

Subjects: Science Essays > Chemistry

Production of Materials

eaction at a much lower temperature. The catalyst is a heterogeneous catalyst. The catalyst and the reactant are not in the same phase (solid, liquid or gas). For example, zeolite - a crystalline subs ...

(19 pages) 45 0 2.2 Jan/2008

Subjects: Science Essays > Chemistry

Observing Protein and Non-protein Catalysts Under Different Conditions

use for extra substrates1.Chemical reactions involve the transfer of one or more electrons from one reactant to another1. The process of losing electrons is called oxidization1. The process of gaining ... he rate of the reaction increased.The effect of temperature on different enzymes varied amongst the reactants used. Normal Jell-O set in a refrigerator came out as normal Jell-O. When kiwi was added t ...

(5 pages) 16 0 0.0 Apr/2008

Subjects: Science Essays > Biology