| Front | What can deforestation lead to? |
| Back | An increase in carbon dioxide into the atmosphere as there are fewer trees to taking up the gas for photosynthesis |
| Tags | Chemistry::Chemistry_Paper2::C9_Chemistry_of_the_Atmosphere::C9.2_Greenhouse_Gases |
| Front | What is coal? |
| Back | A sedimentary rock formed from plants deposits that were buried and compressed over millions of years |
| Tags | Chemistry::Chemistry_Paper2::C9_Chemistry_of_the_Atmosphere::C9.1_The_Earth's_Atmosphere |
| Front | What is the general formula for alkenes? |
| Back | CnH2n |
| Tags | Chemistry::Chemistry_Paper2::C7_Organic_Chemistry::C7.1_Alkanes |