INTRODUCTION TO ORGANIC CHEMISTRY (UNIT 1) 1.2.4 Isomerism Activity 1.9 1. Write the molecular formula of the following compounds? H H H H H CH HỌC – C – CH H-C-C-C-C-C-H H H H H H CH; CH, --CH2-CH - CH, CH 2. Do they have the same or different molecular formula? Do they have the same or different physical and chemical properties? Why? What do we call compounds of this type? Discuss the results in your group and present it to the class.