This document discusses density and provides the following key points: - Density is a measure of mass per unit volume, often expressed as grams per cubic centimeter (g/cm3) - To calculate density, you divide an object's mass by its volume - The document lists several materials in order from highest to lowest density: honey, light corn syrup, Dawn dish soap, water, vegetable oil, lamp oil, rubbing alcohol - It provides two methods to find an object's volume needed to calculate density: using a graduated cylinder for liquids, and using a ruler to measure length, width, and height for solids