CHEM103 Chapter Notes - Chapter 2: Lead, Continuous Spectrum

• School: University of Alberta
• Department: Chemistry
• Course: CHEM103
• Professor: Mariusz Klobukowski

Document Summary

2. 1 elements, compounds and mixtures: an atomic overview. Philosophers of ancient greece thought everything was made up of; hotness, wetness, hardness, and a few other properties. Eg; you cut and cut aluminium until it can no longer be cut. Thus; matter is composed of indivisible particles with nothing but empty space between them. Element is composed of simple bodies not made of any other bodies. Mixtures are not substances because they have a variable composition. Simplest type of matter with unique physical and chemical properties. Each element is unique because the properties of its atoms are unique. Molecule; independent structure of two or more atoms bound together. Consist of two or more different elements that are bonded chemically. The elements are present in fixed parts by mass. Each unit of the compound consists of a fixed number of atoms of each element. Defining feature; its properties are different from the properties of its component element.