Science study guides
Short, honest explanations of the ideas that trip people up in physics and chemistry, each with a worked example.
FundamentalsUnits and conversions: the habit that saves marksWhy most lost marks in physics and chemistry come from units, with a simple routine for converting grams, litres, hours and kilometres correctly.FundamentalsSignificant figures, explained with simple rulesLearn how to count and round significant figures, why zeros are the tricky part, and how many to keep in a calculation.PhysicsHow to solve basic circuit problems, step by stepA clear method for series and parallel circuits with Ohm's law: total resistance, current, voltage drops and power, with a worked example.ChemistryMoles and molar mass, made simpleWhat a mole actually is, how to find molar mass from a formula, and how to switch between grams, moles and number of particles.Study skillsHow to revise for science exams without burning outA realistic revision plan for physics and chemistry: practice questions first, formula sheets, error logs and how to use a calculator sensibly.