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The question is an "Explain question" so we need to say what indexed addressing is and how it works (3 marks): " (1) There is an index register which holds the base value for where the data...

Hi, that's a good question! The key is to make a good plan before you start writing. First highlight key points in the question in order to make sure you know exactly what the question is asking you. This...

Zn_(s) + 2HCl_(aq) => ZnCl_2(aq)+ H_2(g)Evervessence, Zinc becomes smaller and then disappearsCut zinc in to smaller pieces to increase the surface area

Always start with planning. Even if there is little time, mind map briefly as many points that you could talk about. Ideally you need to write about at least five.Always start the essay with a brief intro...

An electrical impulse arrives at the pre-synaptic neuron and triggers the release of neurotransmitters into the synaptic cleft. The neurotransmitters diffuse across the synaptic cleft and bind to the post...