Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
a group of elements between the metals and the non-metals. They are semiconductors and have some metallic and some non-metallic properties.
an atom or group of atoms that replaces a hydrogen atom in an organic compound.
a group of metallic elements that have two electrons in their outer shells and react easily with...
a relative measure of the mass contribution of each component in a compound. The percentage...