This is general knowledge for GCSE Science students, as you must now these compounds by heart to help you succeed in chemistry. Though scary at first glance, regular revisits will help to memorize them effectively for the dreaded exam. This resources includes: The Alkanes and Alkenes in a list, with a brief explanation. The FORMULA to work out the number of Carbon and Hydrogen that makes up a particular Alkane or Alkene. The Molecular formula. The Molecular structure. Master these basic compounds, master the harder ones in no time. Resource located in a Word document to printout or be converted to a PDF.