Bonding - OCR Gateway Ionic bonds, covalent bonds and metallic bonds are examples of chemical bonds. The structure and bonding in a substance are modeled in different ways, including dot and cross ...

Most organic compounds contain carbon and hydrogen, but they may also include any number of other elements (e.g., nitrogen ... Organic chemistry is a highly creative science that allows chemists to ...

The last of the elements to be identified was isolated last week. Ever since bearded Russian Professor Dmitri Ivanovich Mendeléeff classified the probable chemical elements in 1869 and arranged ...