Everything in the universe is made up of matter. The air we breathe, the computers we use, the water we drink – all is composed of matter. Matter is anything that has mass and takes up space. In Chemistry, thorough investigation of the properties of matter has allowed us to learn what gases create the air, how electricity can be used to power a computer, and what a water molecule looks like. In this introduction to chemistry, you will learn how we know what we know about the world we live in through Classification, Structure, Properties and Changes. You will explore the 3 M's: Matter, Metrics and Measurement to understand how matter can be weighed and measured even though it is invisible to the eye. In Stoichiometry you will investigate the reactions of matter and how to apply limits. But before diving into the areas of measurement and reactions, be sure to get a solid ground of understanding with Chemical Bonding and the Periodic Table and Trends. Chemistry...it matters!