density
DESCRIPTION
Density. IPC A Packet 5. Physical Properties. A. Definition: Properties that DO NOT change the CHEMICAL NATURE of matter B. WILL NOT alter the substance C. Examples 1.COLOR 2. SMELL 3. FREEZING POINT 4. BOILING POINT 5. DENSITY. Chemical Properties. - PowerPoint PPT PresentationTRANSCRIPT
Density
IPC A
Packet 5
Physical PropertiesA. Definition: Properties that DO NOT
change the CHEMICAL NATURE of matter
B. WILL NOT alter the substance
C. Examples 1.COLOR
2. SMELL
3. FREEZING POINT
4. BOILING POINT
5. DENSITY
Chemical Properties
A. Definition: Properties that DO change the CHEMICAL NATURE of matter
B. WILL alter the substance
C. Examples a. FLAMMABILITY
b. REACTIVITY WITH WATER
DensityA. Definition: a property that describes the
relationship between MASS and VOLUME (how tightly PACKED the molecules are)
B. Formula to find density: D = M/Va. D: DENSITY
b. M: MASS
c. V: VOLUME
DensityEach cube represents 1 mL of volume.
The Most Dense:
Midrange Density:
The Least Dense:
B
Reading a Density GraphMass vs. Volume
0
10
20
30
40
50
60
70
0 10 20 30 40
Volume (ml)
Ma
ss
(g
)
Order of liquids in the graduated cylinder:
A
B
C
A
C
Density of Pigments
The lower the colors are more dense than the colors that moved higher up the paper.
The Density Column
Less Dense FLOATSMore Dense SINKS. The clear liquid is the
most dense. Blue is the least dense.
Water is Weird
Water expands when it freezes, so it’s density is less than the liquid. That means that ice floats.
Which is good for the fish and other water creatures. Why?
Density Labs
Use a balance to measure MASSTo measure Volume you use:
Graduated cylinder Ruler Beaker (not your first choice as it’s not very
accurate)
Density = mass/volume
It’s an ID number of sorts
The density of a substance is the SAME, not matter what size of the stuff you have.
If you divide a block of wood into three pieces or 30 the density of the wood is the same number!
You can use the density value to identify the substance that you have in your possession. (you can also use color and hardness)
Don’t be Dense
So now, knowing about density, what does this common phrase mean?