Density notes
Name ___________________________________Period_____
DEMO 1: How are Coke/Diet Coke different?
1. What do you expect to happen when I place
the Coke into the beaker of water?
2. What happened?
3. Now predict what will happen when I place
the diet Coke into the beaker of wate?.
4. What happened?
5. What property accounts for the difference?
6. What could I do to make the Coke float?
7. What did I do?
Conclusion: What did you learn from this demonstration? ( full sentence/s)
Notes:
Objective:
Density
Objective:
Imagine that each
(3)
is a molecule. Label the following boxes in order from least dense (1) to most dense
One thing that we know about density is that substances, solid or liquid, that are ______ dense will float in
liquids that are ______ dense.
Now order the following in terms of increasing density (smallest to largest): coke, diet coke, water and salt
water
___________________ <
________________ < _________________ < __________________
DEMO 2: Rubbing Alcohol and H2O
Cup #1 contains water and cup #2 contains rubbing alcohol. What happens when you put an ice cube into
each cup? Draw what happens-
Cup #2
Cup #1
Water
Rubbing
Alcohol
What can you tell us about the density of water, alcohol, and ice cubes?
1.Ice is (more/less) dense than liquid water? (circle one)
2.Ice is (more/less) dense than rubbing alcohol (circle one)
3.Liquid water is (more/less) dense that rubbing alcohol? (circle one)
Place in order of increasing density: _______________ < ____________________ < ________________
Objective:
Density(D)


=
Mass(m)
Volume(v)
D = g/ml
or
D = g/cm3
For graphing, the numerator is always y and the denominator is always x.
Agraph is a diagram of the ratio of y/x.