1. Density

2. What is density?
Density is the amount of mass per unit volume of a material
Matter is made of particles (atoms or molecules) that have mass. The density of a material depends on the masses and the number of particles packed into a given volume.

3. Calculating density D=density, units are g/cm3 or g/mL
m = mass, units are in g
v = volume, units are in cm3 or mL

5. Solving for volume Solving for volume
Irregular objects can be solved using a graduated cylinder and water
Regular objects can be used by measuring and formulas

6. Density and materials
Density does not change for an object, even if it’s volume and mass changes
Densities of some common materials
Water is always 1g/mL

7. What does density depend on?
Mass of particles
More mass, greater density
Distance between particles
Greater the distance between the atoms/molecules, the smaller the density
Density of a gas is usually much less than the density of a solid or liquid