1. Bellringer
Which of the following items will float? Which will sink? Why?

2. Ms. Hanlon’s Science Classes
Density
Ms. Hanlon’s
Science Classes

3. Objectives
Explain the components of the density equation and how to derive each item.
Construct a density column and derive the density and volume of unknowns.

4. Demonstration

5. Formula

6. Formula Triangles

7. Density
Density is a measure of how closely packed the atoms are within a substance.
Density is a physical property of matter.
Units of density are g/mL (liquid) or g/cm3
(solid)

8. Mass
Mass is the amount of matter (number of atoms) within a substance.
Mass is measured with a scale and recorded in grams.

9. Volume Volume is the amount of space a substance occupies.
Volume is measured in a graduated cylinder and is recorded in mL (liquid) or cm3 (solid).

12. Class activity
Follow the instructions on the activity handout.

13. Homework
Complete the worksheet provided.