Chemistry is the branch of science that studies matter and interactions between substances. Chemistry is used in all walks of life from the moment you wake up and brush your teeth to the moment you answer your mobile phone. Chemistry is a math intensive science. You will learn things like the most common element in the universe is hydrogen. You will also learn that the most used controlled reaction is fire. It is used to make more things and mostly like the pinnacle tool used by humans.
This is one of our bigger science sections. The sheets found here start with organic chemistry and advance to understanding the interactions between substances including energy release and bonding.