Density Notes
Name: _________________________________
Chemistry 2023-2024
What is Density?
Density is the _____________________________ per unit of volume.
Measured in:
Mass (M)- in _____________
Volume (V)- in __________ for liquids, __________ for solids
Formula: _____________
Formulas and the DMV triangle
Formula for density: ________________________
Formula for volume: ________________________
Formula for mass: __________________________
Remember:
Density is the ______________ of the “compactness” of a material- it is about more than
_________________________ something is.
Density includes the ___________________________________________ an object takes up.
Density is about how ______________________________________________________ are to
each other.
ALL substances have density- this includes ___________, ______________, and
____________.
Water Density
Density if all about the compactness of stuff in a certain volume- more sugar in water, the
_________________________________________ of the water.
The density of water is defined as the
__________________________________________________________________________.
It is affected by ________________________________________.
The density of water is __________________________________________________.
Liquid Density Experiment
Why do the colors separate into a rainbow?
__________________________________________________________
__________________________________________________________
__________________________________________________________
Which of the three substances is the most dense?
___________________________________
Which of the three substances has the lowest density?
___________________________________
Consider
The density of mercury is _________________________________________
The density of lead is ____________________________________________
What would happen if you placed a lead pool ball in a cup of mercury?
_______________________________________________________________________
Water displacement
Water displacement simple means that an ______________ that is placed in water will
_______________ a _________________ of water equal to the __________________________
of an object.
Remember anything place in water will sink IF it is
_________________________________________________.
You can use water displacement to fine the _______________________ of different objects. The
amount of _____________________________________ by an object submerged in the water is
equal to the _________________ of that object.
Density and Solids
We have seen that less dense substances _________________ in more dense substances.
Why does ice float in water given that they are both made from the same compound, H2O?
_______________________________________________________________________
_______________________________________________________________________
Different solids with have _____________________________________________.
Various rocks, woods, and metals have a characteristic _______________ specific to that
_____________________.
Two solids can have the __________________________________________________ but
different masses- in this case the ___________________ object with have a
___________________ density.
Practice problem #1
A certain mineral has a mass of 17.8 g and a volume of 2.35 cm3. What is the density of this
mineral?
Practice problem #2
What is the mass of a 49.6 mL sample of a liquid, which has a density of 0.85 g/mL?
Practice problem #3
Calculate the density of each block.
Block I: Mass= 79.43 g Volume= 29.8 mL
Block II: Mass= 25.41 g Volume 29.8 mL