Organic nitrogen: the secret killer in Chinese megacities Focus on industry: Fracking Encounter: Chemistry with altitude Worth reading: The Private Life of Atoms In pictures: What shape is my molecule? Phosphorus: the essential element How science works: The future of the periodic table Animal chemistry: Spiders Lab page: Constructing an electrochemical cell Index to Volume 28 Back page: The chemistry of coral bleaching

Viking navigation Isotopes of hydrogen Physics online: The race to the Moon: 50 years on Skillset: Measuring the Planck constant Who are they? Donna Strickland At a glance: Polarised light Exam talkback: Polarising filters Crossword: Clues Radiation: not so simple Mathskit: Forces and free-body diagrams Crossword: Light and heat: solution and notes Index to Volume 28 Cherenkov radiation

This A-level chemistry magazine provides up-to-date articles specially written for students to help them gain the highest grade. Articles feature real-world applications of chemistry and signpost how these link with the exam. Chemistry Review also contains specific features on practical skills and on approaching exam questions. Contents Breath of life Animal chemistry: Bees, honey and venom Drugs and dyes Did you know? Photoswitching isomers In pictures: Elements of smartphones Answer back: Polymers and azo dyes Revision note: The continuum of bonding Worth reading: The Disappearing Spoon Focus on industry: Extracting oil and gas Wonders of chemistry: Solar power: nature does it better Back page: Conservation and cyclododecane

CONTENTS Are vehicle exhaust fumes damaging our health? Answer back: Synthesis and analysis Animal chemistry: Cats and dogs In pictures: Periodic table completed? Wonders of chemistry: Elements old and new Worth reading: Periodic Tales: the Curious Lives of the Elements Valuable vanilla Making and doing: Systematic names Focus on industry: Cracking and related refinery processes Did you know? Knock knock... Valentine chemistry

Contents How clean is our air? Revision note: Disentangling polarity Animal chemistry: Frogs and toads In pictures: Flying over fires What's your poison? Chemistry in medicine: Photochemistry and drug synthesis Focus on industry: What happens in an oil refinery? How science works: Investigating the structure of nucleic acids Spectroscopy of space

CONTENTS Where is the North Pole? Crossword: Clues Will electric cars break the National Grid? Mathskit: Forces, vectors and angles Who were they? Arthur Eddington, 1882-1944 At a glance: Solar eclipse Exam talkback: Electric and gravitational fields Skillset: Magnetic forces on a current-carrying wire Physics online: The periodic table How loud is that? Crossword: Humidity, eclipses and early scientists: solution and notes Micromotors