Try these interactive flashcards based on GCSE chemistry past papers. By working your way through the flashcards created by experts, you can prepare for your chemistry exams and make your revision ...

The reaction generates amino acids and nucleic acids, the building blocks of proteins and DNA. Four billion years ago, the Earth looked very different than it does today, devoid of life and covered by ...

Very few have heard about this. It's over 100 years old and explains why bread smells so good and turns brown. But baking also produces a few chemicals of concern – or are they? Here you get a ...