This document provides information about matter and its properties. It defines the three states of matter as solids, liquids, and gases. It describes the properties of each state and provides examples. It also discusses physical and chemical changes, explaining that physical changes alter a substance's properties but not its chemical makeup, while chemical changes create new substances. The document includes lab activities where students observe and classify samples based on their state and properties, as well as activities to demonstrate physical and chemical changes. It concludes by discussing how the weight of an object is equal to the sum of the weights of its parts before and after a change.