1. **Homework – complete lesson 4**
September 29, 2015
Learning Target: I will be able to measure the mass and volume of a sample of air and calculate it’s density.
Entry Task:
Read “Air Heads” on pages
Answer in journal: What is air?
Agenda: Lesson 4 – Density of Air
Procedures 2-4
Student Sheet 4.1
Reflecting Questions A-C
**Homework – complete lesson 4**
Online Book Lesson 4

2. Density of Air Procedures
Measure the mass of the plastic bottle w/washer and valve. Record on data table
Use the washer, valve, and pump to remove air from bottle
Measure the mass of the bottle without air. Subtract the starting mass from the ending mass
Use the graduated cylinder to measure the amount of water it takes to fill the bottle = volume. Record on data table
Divide mass by volume to calculate the density of the air removed.

3. Density of Air Trials Volume Mass of bottle w/Air
Mass of bottle w/out air
Mass
Density 1 2 3
Average