1. Which do you think would have the greater mass? Greater volume? Why?
Density Notes
Which do you think would have the greater mass? Greater volume? Why?
1 kg of feathers
1 kg of rock
_______________
_______________

2. Volume is the amount of ____________ something takes up
Volume vs. Mass
Mass is the amount of ___________ in an object (how “heavy” something is)
Volume is the amount of ____________ something takes up

3. Finding Mass
Place the object on a scale or ____________ Units should be _________(g) or ___________(kg)

4. Finding Volume of a Regular Shape
An object with a “regular” shape is ___________ and __________
Measure ______(L), _____(W) and ______(H)
Multiply L x W x H
Make sure units make sense (cm3, m3)
4 cm x 6 cm x 5 cm = ________
Conversion Factor: 1 cm3 = _____

5. Finding Volume of an Irregular Shape
An object that can not easily be measured
Use ______________
Fill a graduated cylinder or overflow can with water
Measure __________water goes ____/spills ____when object is placed in water
Remember: 1 cm3 = 1mL

6. Depends on the units used for mass and volume
DENSITY
Density is defined as ______per unit ______. It is a measure of how ________ packed and how ___________the molecules are in an object.
Density is the amount of matter within a certain volume (how much “stuff” is crammed into something)
Density is the amount of matter within a certain volume.
Units of Density:
______ or ______
Depends on the units used for mass and volume

7. Density of Phases of Matter
Which phase of matter is the densest?
Which phase of matter is the least dense?
*Usually the solid phase of a substance will ________in it’s liquid phase because it is more _________
_______
_______
Water is an exception!
Because water ________ when it __________, solid water (ice) is actually _________dense than liquid water

8. Densities of Common Substances (g/mL)
Solids
Bone 2
Brick 1.8
Cork 0.2
Ice 0.92
Marble 2.7
Paraffin 0.9
Rubber 1.2
Bamboo 0.3
Oak Wood 0.7
Pine Wood 0.6
Metals
Aluminum 2.7
Copper 8.9
Gold 19.3
Iron 7.8
Lead 11.3
Silver 10.5
Liquids
Pure Water 1.0
Sea Water 1.03
Alcohol 0.8
Gylcerine 1.3
Milk 1.03
Turpentine 0.9
Mercury 13.6
Gasoline 0.7
Note: The __________of a substance will always be the __________, regardless of it’s shape or size
i.e. the density of pure water is always 1 g/mL

9. Density (D) is mass (m) per unit volume (v)
Finding Density
Density (D) is mass (m) per unit volume (v)
per = ___________by
D = m/v (m ÷ v)
Formula:
D = M / V
M =______
V = ______
M = ______
V= _________
D = _________
Divided by
Multiplied by

10. Practice Problem #1
If the mass of an object is 35 grams and it takes up 7 cm3 of space, calculate the density.
Given:
Mass =
Volume =
Density =
Formula: ______________
Solution:

11. Practice Problem #2 & 3
2. A rectangular block of copper metal has a mass of 1896 g. The dimensions of the block are 8.4 cm by 5.5 cm by 4.6 cm. From this data, what is the density of copper?
3. Find the mass of mL of benzene. The density of benzene is g/mL.

12. Practice Problem #4
What volume of silver metal will has a mass of exactly g. The density of silver is 10.5 g/cm3.