CHM 151 Lecture 1: Chapter 1_notes written
Document Summary
Chemistry: the study of matter; its properties, the changes it undergoes, and the energy associated with those changes. Matter: anything that occupies space and has mass. Solid: fixed shape, fixed volume at a certain temperature. Liquid: fix volume, non-fixed shape; conforms to shape of container, but fills container only to extent of its own volume. Gas: unfixed volume and shape; conforms to shape of container, filling entire container. Element: substance consisting of one unique kind of atom. Compound: substance consisting of two or more different type of elements chemically bound together. Mixture: two or more substances physically intermingled; can be separated. Heterogeneous mixture: not uniform, visible boundaries between components. Homogeneous mixture: uniform, no visible boundaries between components. Figure 1. 5: properties of matter: a characteristic that gives a substance its unique identity. Physical properties: a property that a substance shows by itself without changing into or interacting with another substance.
