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According to the particle theory of light, hf=φ+KEmax, so along with the minimum amount of energy required, there is a minimum frequency as well, φ= hfo. Thus, the incident photon must have a f...
H2SO4 ---> 2H+ + SO42- ...
Firstly, I would structure my essay in the style of compare and contrast, as this is what the examiners are ultimately looking for. Say I choose Death of a Naturalist and The...
The first thing to remember when analysing a historical primary source is that it will always be of some value. Most primary source exam questions ask of a source's value, or of its use to a historian, an...
As A-level students, you will hear over and over again how you must have a variety of tenses - especially sophisticated ones - in your essays and your oral presentations in order to get to those top marks...
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