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The activation energy

The rate of reaction tells us how quickly a chemical reaction happens. The rate can be determined by the speed with which one of the reactants is used up or the speed that one of the products is made. Time is a critical factor in the rate of any reaction.Read More

The accuracy of joule meter

Aim: To investigate how the efficiency of an electric motor varies when it is lifting different weights. Summary: I have investigated how the efficiency of an electric motor varies when it is lifting different weights. I found that the efficiency of my motor (using an input voltage of 4v) wasRead More

The Kinetic Energy

The aim of this piece of work is to investigate the factors that affect how fast a marble/ball bearing travels once it has travelled down the curtain rail. Factors: There are 5 main factors that affect the speed of the marble/ball bearing once it hits the ground after travelling downRead More

Electricity and Magnetism section

My Aim “My aim is to find out how much energy is released when burning different types of crisps and to find which one releases the most energy. ” Walkers Hula Hoops French fries Peak Potatoes 34 g/100g of fat = 2200kJ/100g of energy 28. 1g/100g of fat = 2106kJ/100gRead More

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 carbonRead More