The relationship between liquids and gases engaged the attention of a number of distinguished scientists in the mid 19th Century. In a definitive paper published in 1869, Thomas Andrews described experiments he performed on carbon dioxide and from which he concluded that a critical temperature exists below which liquids and gases are distinct phases of matter, but above which they merge into a single fluid phase. During the years which followed, other natural phenomena were discovered to which the same critical point description can be applied - such as ferromagnetism and solutions. This book...

The OCR A Level Biology A Revision Guide provides comprehensive, specification-matched content, packed with engaging revision and practice material to keep you focused. It also contains a wealth of exam-style questions to test your knowledge and skills to help you fully prepare for the exams.

The OCR A Level Biology A Revision Guide provides comprehensive, specification-matched content, packed with engaging revision and practice material to keep you focused. It also contains a wealth of exam-style questions to test your knowledge and skills to help you fully prepare for the exams.