This lab is to be used as an introduction to a chapter covering pure substances and mixtures. The file contains two parts.
Part 1 - student data sheet with hypothesis questions
Part 2 - student information packet containing information on most substances they will find. The info paragraph was obtained from wikipedia.org.
Student Directions: Find 10 objects around the room. Identify the main material the object is made out of. Classify that material as either a pure substance or mixture. The first classification is meant to be an educated guess.
Instructor: Give the students the information packet containing the most common materials on their lists. Have the students read about the material and then make a second classification as to pure substance or mixture. Discuss as a class.