Measuring enzyme pates of peaction

The aim of this experiment was to use four different ways of measuring the rate of a chemical reaction by conducting a series of experiments finding out how quickly enzymes work. Method – {SEE SHEET} Results Summary Enzyme End Point Min (s) End Point Min Rate Of Reaction Amylase (Starch) 1:30 1. 5 0. 66 […]

The diameter of wire I will be using is

Resistance occurs in circuits because of components in the circuit and a larger amount of resistance causes the battery to have to exert more energy to push the charges through the circuit. This then causes the current to decrease as resistance is not allowing as much current to flow. Resistance can be useful in some […]

Multiplying the mass by gravity

Outline plan: I will determine the extension of a piece of copper wire when various loads are placed upon it at the end. Using the results I will thus calculate Young`s modulus. Background Young modulus (E) is a quantity that describes the resistance of a wire to stretching. The quantity is a property of the […]

By rearranging the formula

Outline plan: I will determine the extension of a piece of copper wire when various loads are placed upon it at the end. Using the results I will thus calculate Young`s modulus. Background Young modulus (E) is a quantity that describes the resistance of a wire to stretching. The quantity is a property of the […]

The resistivity of all three

I was given three different types of metals and asked to find the resistivity of all three. This was because I wanted to find the best conductor and make a suitable recommendation as to how this metal could be used in the industry. The resistance of a metal is affected by the length and the […]

The structure of their content

The aim of this experiment is to see if the content of the nuts affects the energy release when nuts are burned. Hypothesis The nut that has the highest amount of lipids is the one that’s going to produce more energy because lipids have the structure that was more carbon hydrogen bonds. The method use […]

Natural cloning cloning

Introduction Is cloning the way of the future? Well there are many arguments for and against it. In this case study I will be exploring the many different ways in which cloning can or can not be used in the future, discussing the many reasons for and against it. This investigation will study how cloning […]

The particles of atoms and electrons

I carried out a preliminary experiment to find out which apparatus would be best suited to find the resistance of Nichrome wire, to see the other factors that could affect the experiment and also to see if I could improve any of the steps in the method. I began by setting up two circuits, the […]

The minimum energy

A reaction takes place when two different molecules collide; this is only possible when the particles have enough kinetic energy. This energy requirement is called the activation energy (AE). The rate of a reaction can be altered by the following: – – Temperature – Catalyst – Concentration – Surface Area Below shows a graph, this […]

Combustion is a reaction that requires oxygen

I am planning to investigate how long a candle burns for when put under a glass beaker. I am also aiming to see whether it is the candle or the size of the beaker that determines how long the candle burns for. I also want to find out if you can determine the volume of […]

Hydrochloric acid

We are going to investigate the reaction between Sodium Thiosulphate and Hydrochloric Acid. We are also going to investigate the rate of reaction and what changes affect this as well as the reaction itself. Scientific Knowledge:- There is a theory that states that certain factors, properties and states of the different chemicals used in the […]

Transform electric energy

Metals have a high density of conduction electrons. The aluminium atom for example has three valence electrons in a partially filled outer shell. In metallic aluminium the three valence electrons per atom become conduction electrons. The number of conduction electrons is constant, depending on neither temperature nor impurities. Metals conduct electricity at all temperatures, but […]

Manganese oxide

Hydrogen Peroxide decomposes in the presence of manganese (IV) oxide to produce water and oxygen, as shown below. Mn (IV) oxide 2H2O2(l) 2H2O(l)+O2(g) Hypothesis. I predict that the rate of reaction will increase as the concentration of the Hydrogen Peroxide increases. Procedure. For this experiment it was essential that the affecting factors of the experiment […]

A low resistivity indicates

The aim of the investigation is to determine the resistivity of nichrome wire at varying dimensions. The nichrome wire is of 1 metre at 32 gauge and also of 0. 5 metre at 28 gauge. Resistivity is an electrical measure indicating how strongly a material opposes the flow of electric current. A low resistivity indicates […]