Density Notes PDF

Name ________________________
Date ____________
Do Now:
Earth Sci. Per _____
Mr. Landsman
Fundamentals of Science Measurement
Match the term to its definition.
______ mass
a) The pull of gravity on something with mass
______ volume
b) The amount of matter in an object
______ weight
c) The amount of space something occupies, or its size
______ distance
d) The stuff the Universe (everything) is made of
(atoms etc)
______ matter
e) How far apart things are (extent of separation)
Match the measurement to the appropriate units. Some will have more than
one possible unit.
Grams
centimeters
Grameters
cm3
Kg
cm/sec
Milliounces
Km
Distance: ________________________________
Milliliters
Inches
Area:_______________________________________
Miles/hour
Liters
Rate: ______________________________________
Km3
Litograms
Pounds
cubic liters
°C/minute
Miles
Mass: ____________________________________
Volume: _________________________________
Weight: __________________________________
Quiz _______: % error, Scientific Notation, Rate of Change, Graphing, Lat/Lon, Shape, Density
Density Notes:
AIM: How can we find the density of a substance?
How is density used to identify substances?
1. Density is a measure of the mass per unit volume of a substance.
In other words;
how much stuff in an certain space
2. Density =
mass (g)
volume (cm3) or (ml)
3. Every substance has a specific density. Density can be used to
identify substances. Ex: Copper = 8.9 g/cm3
4. All substances are at their highest density in the solid phase
EXCEPT water. How can we tell that solid water (ice) is less dense
that liquid water?
________________________________________________
Thought - How would the world be different if water was most dense
in the solid phase?
Find the density ( 3 steps )
1. mass = 3.5g
volume = 11.5cm3
2. mass = 178.26g
volume = 23.67cm3
3. Density = 3.4g/cm3
mass = 24.4g
Density Notes (cont):
Factors Affecting Density:
1. Temperature affects Density Inversely
(assume no phase change) Explain how the Ring/Ball demo shows this.
_____________________
_____________________
_____________________
_____________________
_____________________
2. Pressure affects Density Directly
Explain how the Cheesy-Poof squishing demonstrates this.
_____________________
_____________________
_____________________
_____________________
_____________________
3. The amount of material (volume of substance at
standard temp and press.) does not change the
Density of the material.
The Density of Aluminum is
“always” 2.7g/cm3