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 time required for half the atoms present in an object have undergone radioactive decay and changed into something else.
a molecule that is so big that we can see it, e.g. diamond.
this consists of three separate layers of the Earth â the crust, the mantle and the core.
a substance that can donate or accept a proton. It can act as an acid or a base.