Experiment

Leaves are made up of several different layers of cells, which are very complex. They all have different functions. Leaves differ from one plant to another. Some may be very large, while some may be small. There could also be a difference in texture, colour and shape. Some leaves may also appear more turgid, while […]

For this reaction the heat of dissociation is equal to the HO-OH bond energy. Since it is difficult to measure the heat of this reaction directly, you will use Hess’ Law to determine DHdis. Hess’ Law states that since the enthalpy is a function of state, it does not matter how the final state is […]

In this assignment I will be looking at describing thermoregulation in hot and cold climates. That will be looked at within the first part of the my assignment and then within the second part of the assignment I will be showing an understanding of the effects that altitude and water have upon the physiological functions […]

Title of Experiment: Pressure distribution on an aerofoil Aim: The aim of this experiment is to examine the pressure distribution on an aerofoil and its variation with incidence. Introduction: An aerofoil is the two-dimensional cross section of a wing, tail or helicopter rotor blade. The lift and pitching moment on an aerofoil is determined by […]

Introduction The below are the possible factors that might affect how quickly a sugar cube dissolves in water temperature of water/liquid water being shaken water being stirred the sugar lump being loose amount of sugar in the cube In this experiment, I will be investigating if the change in water temperature (independent variable) would affect […]

he use of transition metal oxides, such as Co3O4, as positive electrode materials in lithium ion batteries (LIBs) has attracted great interest due to their high discharge-charge capacity. However, the poor capacity retention of the materials caused by large volume changes during the cycling process limits their cycle life time. Therefore I propose gold nanoparticles […]

In this practical, the aim of this experiment was to find out the catalytic power of alkaline phosphate, as well as the rate of reaction and the activation energy of p-nitrophenol phosphate. Enzymes are biological molecules that catalyze a chemical reaction. ‘Enzymes work by lowering the activation energy of a chemical reaction making it easier […]

Our experiments have yielded insights into the importance of molecular polarity, which can be utilized to anticipate the compatibility between two substances. We have discovered that polar compounds will solely blend with other polar substances, and non-polar compounds will exclusively mix with non-polar counterparts. Henceforth, this principle is instrumental in assessing a substance’s solubility within […]

In this experiment, the stereochemistry of 2,3-dibromo-3-phenylpropanoic was found to determine syn or anti addition of bromines. The melting point was 199-203°C and the NMR J values angle is at 167 which both prove the erythro-2,3-dibromo-3-phenylpropanoic. Determination of the Stereochemistry of 2,3-dibromo-3-phenylpropanoic acid. An addition of bromine was added to trans-cinnamic acid and it is […]

I would like to thank my mom with helping me with my science project. She has helped me with researching the internet to find my science fair project. She helped me with finding the information that is needed to do my experiment and preparing my science proposals. She also helped me with researching the following […]

The following experimental method was planned as an extension of the second experiment, concentrating on investigating a slightly altered question. The main aim of this specific experiment was to discover the unknown component of Panacetin, efficiently addressing the second question raised in Experiment 2. The equation representing this reaction is still unaltered from its previous […]

This science fair project was performed to find out the effect on plant growth of adding caffeine to the soil. The experiment was done by using mung bean plants and watering them daily with water, water mixed with caffeine and with a coffee mixture. Hypothesis The mung beans watered using the coffee mixture will grow […]

Aim To find out how the permeability of a beetroot membrane cell is affected by ethanol. To do this we will investigate different concentrations of alcohol (10-70%) and measure the absorbance using a colorimeter to show us how much juice has leaked out. Hypothesis I predict that as the concentration of ethanol goes up, the […]

Concentrated hydrochloric acid is roughly 11 M. Pour out into a measuring cylinder about 2 cm3 of concentrated hydrochloric acid. Transfer it to a 250 cm3 flask and make up to the mark with water. Shake well. Put some pure sodium hydrogen carbonate or anhydrous sodium carbonate into an evaporating dish and heat gently over […]