Search over 10,000 free study notes

The rate of chemical reactions depends on the temperature, concentration of the reactants, size of the particles reacting and whether there are any catalysts present.

When the temperature is increa...

We can go through your controlled assessment one paragraph at a time, and look at exactly what you are trying to argue in each paragraph. From then on we will use 'PEEL' (point, evidence, explanation, lin...

Shortest answer:

45 degrees

Short Answer:

If the snowball is thrown at velocity v, at angle θ

This is a common stumbling block I'm sure many candidates reach, only to hear "how long is a piece of string?" My advice would be to snap up as much as you possibly can, don't turn anything down...

Answer: The average fertility rate of a country is the number of babies born per 1000 women of childbearing age (15-49). Overall LICs have higher fertility rates HICs. Therefore a falling fertility rate i...