Struggling with your prescribed literature?
Our Literature Study Guides provide insights and analysis of themes and characters and includes guidelines for writing your exam.
the part of the Earth and its atmosphere in which life can exist.
a measure of the bond energy of a chemical bond. A large amount of energy is needed to break a...
the difference between the energy absorbed to break bonds and the energy transferred to the...
the theory of acids and bases which defines an acid as a proton donor and a base as a proton...
(also called allotropism) the property of some chemical elements to exist in two or more...