CHEM 1211K Lecture Notes - Lecture 1: The Smell, Boiling Point, Filter Paper

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This is the most important thing to know first! Matter is anything that occupies space and has mass: ex: everything in the classroom is matter because it is taking up space. We call a specific instance of matter such as air, water or sand a substance. Chemistry is the science that seeks to understand the behavior of matter by studying the behavior of atoms and molecules. The simple definition is they are basic building blocks of ordinary matter. Typically atoms bind together geometrically to form molecules; it is rare to find a free atom . Know the structure of hydrogen peroxide: it contains the water, ammonia, methane, and carbon dioxide molecule: ex: the water molecule contains two oxygen atoms and one hydrogen atom which is held together by a chemical bond. One use of hydrogen peroxide is to bleach your hair, like in the olympics.