| 1. | Surface area to volume ratio experiment
Surface area and volume ratio
Theory: In this experiment the size and shape of some cells is modelled using agar gel. ...
Aim: To investigate the relationship between the surface area to volume ratio and rate of diffusion, using a model.
Hypothesis: That the larger the surface area to volu...
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| 2. | Rate of Reaction
Rate of Reaction Coursework
Preliminary Work
Aim: How does ‘Surface Area’ affect the rate of reaction between calcium carbonate and hydrochloric acid?
Prediction: I predict that the bigger the surface area the faster the calcium carbonate will react with the hydrochloric acid therefore a fast...
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| 3. | ICT SURVEY
Survey result charts 1.Are you male or female? ?? 2.Do you own a mobile phone? ?? 3.Does anyone in your family own a mobile phone? ?? 4.How long do you use your mobile phone a day? ?? 5.Are you aware of the health risks involved with using mobile phones? ?? 6.If so, where did you learn of the health...
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| 4. | Poissons Ratio
Objective
The objective of the experiment was to determine the values for Poisson’s ratio for some engineering metals, including metal and rubber. ... 03mm
Theory
The theory of Poisson’s Ratio is that as the material is stretched longitudina...
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| 5. | Mathematics in the world today
LENGTH, AREA, VOLUME Length (L) cm Volume (V) cm3 Perimeter = Distance all the way round the shape Area (A) cm2 Area = Space inside Prisms A prism is an object that is the same shape all the way through. Volume of Prism = Area of Cross Section x Length CUBOID V = L x W x H TRIANGULAR PRISM V = ½ (b ...
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| 6. | Investigation of the Mass lost at a Copper Anode during Electrolysis
An Investigation of the Mass lost at a Copper Anode during Electrolysis
Background Information
When copper sulphate solution is electrolysed using copper electrodes, copper metal is transferred from the anode (+) to the cathode (-). The copper electrodes are active. As copper ions are reduced ...
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| 7. | Biology Coursework
Biology Coursework. Planning. Aim: To find out the rate at which hydrogen peroxide (H 202) is converted into the product, oxygen (O) and water (H2O), during an enzyme controlled experiment. Catalysts are used to speed up reaction. Many chemical reactions take place in our cells and need to happen qu...
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| 8. | 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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| 9. | Effects of Temperature on the Permeability of Beetroot Cells
The Effects of Temperature on the Permeability of Beetroot Cells
Introduction
Cells, the basic unit of life, are contained within a plasma membrane. ... We know that in beetroot cells a dye called betalain is contained within the cytoplasm, this gives the beetroot its characteristic red/purpl...
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| 10. | Osmosis
GCSE Biology - Osmosis Coursework
Potato and Osmosis Investigation
Skill Area P: Planning
Aim: To investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato chip of a given size.
Hypothesis: Osmosis is define...
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| 11. | Investigating diffusion
Aim: The aim of the experiment is to find out the internal concentration of a potato. Fair Testing: To ensure that our experiments are fair tests, I will be keeping the following factors the same in all of them: · Temperature · pH · Volume of potato · Volume of water/sucrose solution (the variable i...
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| 12. | Rate of Reaction Hydrochloric acid Magnesium ribbon
Rate Of Reaction Between Hydrochloric Acid And Magnesium Ribbon
Introduction:
In this experiment I will be analysing the rate of reaction of five different strengths of acid. ...
There are four main variables that could effect the rate of reaction, these are:
1. ... This could change th...
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| 13. | Mass Volume and Density
Experiment 2
Mass, Volume, and Density
Kelly A. Meiler
Physics 121-01
Date of Experiment-1/27/04
Date of Report due- 2/3/04
Abstract
Through the use of highly accurate and precise measuring instruments, one can determine experimentally, the density of an object and wha...
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| 14. | Y11 GCSE Chemistry CourseworkRates of Reaction
I will be investigating how changing the length of magnesium ribbon affects its rate of reaction with hydrochloric acid. Equation: Mg (s) +2 HCl (aq) MgCl2 (aq) + H2 (g) Prediction: I predict that as the length of magnesium ribbon (surface area) is increased, the rate of the reaction will increase. ...
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| 15. | How does temp affect the bounce hight of a squash ball
How does temperature affect the bounce height of a squash ball?
I am investigating how temperature affects the bounce height of a squash ball. To do this I will heat the ball to different temperatures and record the height the squash ball bounces from one meter above a hard surface; I am ...
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| 16. | Determination of the formula ofHydrated Copper Sulphate Crystals
... 97g
Mass of the crucible and hydrated copper sulphate crystals=46.50g
Mass of hydrated copper sulphate crystals=46. ... 91g
Percentage of water of crystallistion in crystals = 0. ... 96%
Experiment 2
Mass of copper sulphate crystals = 6. ... 467 *10-3 mol
Number of moles of Cu2+ in 250cm3...
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| 17. | Science Coursework
Chemistry coursework Aim: To investigate the rates of reaction for Calcium Carbonate (CaCO3) and Hydrochloric Acid (HCL). Hypothesis: I think that the higher the concentration of acid, the quicker the rate of reaction. This is because the higher the concentration of acid the more particles there wil...
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| 18. | the catalytic decomposition of hydrogen peroxide
The Catalytic Decomposition of Hydrogen Peroxide. Looking at my graph it doesn’t show the ideal pattern. This could be due to a number of errors that I will discuss later. Experiment 1 shows an increase of oxygen produced with time, its rate of reaction is similar to experiment 4 which levels out at...
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| 19. | horn speakers
The best speakers are horn speakers.
Design of a Guys front-horn
The horn neck needs to have the same diameter as the cone surface. ... The horn mouth Am had to have a surface enabling the horn to work from 330Hz up. For this I used the following formula:
Speed of sound c
Cut off freque...
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| 20. | Photosynthesis
... They do this by a
process called photosynthesis. For photosynthesis to occur they need sunlight
energy. ... I believe this will happen
because when the light source is nearer to the plant more of the plants
surface area is coming in to contact with the light from the desk lamp
there...
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