Search over 10,000 free study notes

Fractional distillation works by using the fact that molecules of different sizes have different boiling points. Generally, the smaller a molecule, the lower its boiling point. When heating up a mixture of m...

Set up an essay plan (important to review how to structure an essay and the PEEL format). It can be helpful to create two mind maps at first, one for ideas as to how he is not responsible and another for how...

So most people rely on the simple Point, Evidence, Explain or PEE structure when writing essays. In order to get those higher marks, however, you need to use a more sophisticated structure than that. The one...

A chemical reaction will only occur if the molecules collide with enough energy, when you apply heat to a reaction you're giving the molecules more energy so when they collide they're more likely to react. A...

I spent some time working in a factory that made car parts recently and it is a good example of the different kinds of averages. This factory received about 100 orders a week. We could ship roughly 30 of the...