Essays Tagged: "reactants"

photoshynthesis

- -PHOTOSYNTHESISGeneral InfoDefn: 'To make with light'Reactants (Ingredients)CO2, H2O, Sunlight, chlorophyllProductsFood (C6H12O6 = glucose) and O2Overall ...

(2 pages) 68 1 4.5 Jan/1997

Subjects: Science Essays > Biology > Plant Biology

Disappearing X Experiment. Coursework about sodium thiosulphate and hydrochloric acid. Method, Results, Fair Testing, Evaluation included. Was marked with a passing grade.

d hydrochloric acid.Hydrochloric Acid + Sodium Thiosulphate "" sodium chloride + water + sulphurThe reactants are both colourless, but one of the products, sulphur, is yellow, so we can use this fact ...

(3 pages) 23642 0 3.3 Feb/2003

Subjects: Science Essays > Chemistry

Continuous Stirred Tank Reactors (CSTR).

st frequently with liquid phases, but can handle gas or solid reactions as well. No matter what the reactants are or the product is, all CSTR's have the same components. There is an inlet stream(s) th ... product is, all CSTR's have the same components. There is an inlet stream(s) that bring all of the reactants in at a particular rate. This stream(s) dumps into a large container; there is a shaft wit ...

(3 pages) 30 0 4.2 May/2003

Subjects: Science Essays > Physics

Investigating Some Factors Which Affect the Rate of Reaction.

ions can be completed at different rates. The rate of reaction is measured by observing how quickly reactants are used up or how quickly products are forming. This can be calculated in three ways:oPre ... chemical reaction is completed. It lowers the level of activation." A catalyst works by giving the reactants particles a surface, which it can stick to and collide with each other. This increases the ...

(3 pages) 69 0 4.8 Oct/2003

Subjects: Science Essays > Chemistry

Investigating the affect of concentration on the rate of reaction.

nIntroduction:This investigates how the rate of a chemical reaction depends on the concentration of reactants in the solution. This will be investigated with the following experiment in which dilute h ...

(5 pages) 65 1 1.8 Oct/2003

Subjects: Science Essays > Chemistry

GCSE Chemistry - Sodium Thiosulphate Coursework

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

Rates if Reaction GCSE Cousrework

IntroductionI am investigating what affects the rate at which to reactants react and make a product. The two reactants in particular are marble (CaCO3) and hydrochlo ... o investigate. The list is belowThese things might affect the rate of the reaction1. Amounts of the reactants.2. Stirring or shaking the reactants.3. Adding a catalyst to the mixture.4. The temperatur ... to the mixture.4. The temperature at which the solution is.5. The concentration or molarity of the reactants.6. The surface area of the surface of the marble.My VariableI have chosen to study how the ...

(13 pages) 47 0 3.0 Feb/2004

Subjects: Science Essays > Chemistry

Effect of tempreature on sodium thiosulphate

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 ... reaction, basically, takes place when there are successful collisions between the particles of the reactants involved. The more energy that is present in reaction, the quicker it will be, as the part ...

(7 pages) 47 0 3.0 Mar/2004

Subjects: Science Essays > Chemistry

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

Biology: The Light Dependent Reaction

d up by the NADP+, making NADPH.The light dependent reaction takes place in the thylakoid membrane.-Reactants:Light EnergyChlorophyllADP+PNADP+EnzymesWater-Products:Oxygen- byproduct or used in cellAT ...

(1 pages) 31 0 1.8 Apr/2004

Subjects: Science Essays > Biology

The Light Independent Reaction--A.K.A. The Calvin Cycle

n takes place in the stroma.-Equation:6CO2 + 18ATP + 12NADPH2= C6H12O6 + 18ADP + 18P + 12NADP +6H2O-Reactants:ATPNADPHEnzymesCO2RuBP-ProductsGlucoseADP+PNADP+Alternate Pathways:-C4 Pathway: fixes carb ...

(1 pages) 6962 0 2.0 Apr/2004

Subjects: Science Essays > Biology

An experiment investigating how the concentrations of the reactants affect the rate of reaction

An experiment investigating how the concentrations of the reactants affect the rate of reactionAimTo find out how the concentrations of the reactants affect t ... ly fast reaction is an explosion. The speed of a reaction can be observed either by how quickly the reactants are used or how quickly the products are forming. For this experiment I will be observing ... ed or how quickly the products are forming. For this experiment I will be observing how quickly the reactants are forming (how quickly the solution turns milky white), this is because this method is a ...

(8 pages) 74 0 3.9 Jul/2004

Subjects: Science Essays > Chemistry

The effect of concentration on a reaction rate with hydrolic acid over the magnesium chip.

surface area of the magnesium chip and a catalyst could be used.Introduction: In my experiment the reactants are hydrochloric acid and the magnesium strip. The chemical reaction takes place when the ... ause there are more of them in the same volume. A reaction will only take place if the bonds in the reactants are broken. The colliding particles must have activation energy and in the correct directi ...

(9 pages) 27 0 3.0 Sep/2004

Subjects: Science Essays

Chemical Reactions

ur body, they all take place without our help. In a chemical reaction, some bonds are broken in the reactants in order to form bonds in the products, and atoms are rearranged. Chemical reactions alway ... that a chemical reaction is taking place can be (1) the substance has different properties than its reactants (2) a change in color (3) forming a gas or solid precipitate (4) or energy is transferred. ...

(2 pages) 53 2 2.7 Nov/2004

Subjects: Science Essays

Science-chemistry practical-To find out how the concentrations of the reactants affect the rate of reaction

Aim:To find out how the concentrations of the reactants affect the rate of reactionVariables:Possible variables that could speed up the rate of a ... ly fast reaction is an explosion. The speed of a reaction can be observed either by how quickly the reactants are used or how quickly the products are forming. For this experiment I will be observing ... ed or how quickly the products are forming. For this experiment I will be observing how quickly the reactants are forming (how quickly the solution turns milky white), this is because this method is a ...

(7 pages) 26 0 3.0 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

An investigation to see how Hydrochloric acid reacts with Magnesium to produce Hydrogen gas

ge that happens in a single unit of time. When a chemical reaction takes place the particles of the reactants collide. The more often the particles collide the more likely they are to react and so the ... a reaction takes place can vary and depends on a number of factors:- The surface area of any solid reactants.- The concentration of reactants (including pressure in the case of gases)- The temperatur ...

(8 pages) 19 0 4.0 Dec/2005

Subjects: Science Essays > Biology

Cheamistry: Rate of reaction.

The rate of a reaction is how quickly the reactants form products.Rate of Reatcion = Volume of products formed cmTime taken (secs)In this part ... s.Rate of Reatcion = Volume of products formed cmTime taken (secs)In this particular experiment the reactants are magnesium (Mg) and hydrochloric acid will be used. I will be using different molars an ...

(1 pages) 20 1 3.0 Jan/2006

Subjects: Science Essays > Chemistry

The effect of concentration of enzyme and enzyme substrate on the rate of an Enzyme-catalysed reaction

reaction. They work by lowering the activation energy of a chemical reaction. In order to bring to reactants together, energy has to be expended. Enzymes lower that energy barrier. When discussing en ... followed: The catalase lowers the activation energy of the chemical reaction. In order to bring the reactants together, energy has to be expended. The catalase lowers that energy barrier that means it ...

(13 pages) 84 0 0.0 Mar/2006

Subjects: Science Essays > Biology

To investigate the effect of surface area on the rate of reaction using the enzyme Catalase, found in potato, and the substrate Hydrogen Peroxide.

been washed with distilled water and I will use a different conical flask for each test so that any reactants left in a flask wont affect further tests. The procedure will stay the same so that the re ...

(2 pages) 23 0 3.0 Mar/2006

Subjects: Science Essays > Biology