Exothermic reactions release heat (surroundings get warmer), while endothermic reactions absorb heat (surroundings get colder). 5. Organic Chemistry This topic focuses on carbon compounds. Focus on: Alkanes: Saturated hydrocarbons ( CnH2n+2cap C sub n cap H sub 2 n plus 2 end-sub Alkenes: Unsaturated hydrocarbons with a double bond ( CnH2ncap C sub n cap H sub 2 n end-sub
One significant application of chemical bonding is in the development of materials. For instance, the strong covalent bonds in diamond make it extremely hard and durable, making it suitable for cutting tools and jewelry. On the other hand, the weak intermolecular forces between molecules of a gas, such as oxygen, make it easy to compress and expand. gcse chemistry revision notes pdf
If you're looking for PDF resources, here are a few suggestions: Focus on: Alkanes: Saturated hydrocarbons ( CnH2n+2cap C
How fractional distillation separates mixtures based on boiling points. 6. Chemical Analysis and the Atmosphere If you're looking for PDF resources, here are
