Density
Test

** **

Directions:
This is an essay test. Please complete each question and task. You will work
together to collect data but must work alone to answer each question. Use your
own paper to answer each question. Number everything.

- A shipment of eight
assorted metals recently arrived in Mr. Crosby’s Science classroom without
any labels on them. As a student scientist you have been asked by Mr.
Crosby to determine the density of each metal and then use a chart to
determine the actual identity of the known metal.

Task #1: Explain how you would go about this
problem. What measurements would you need? How would you determine the density
of each unknown metal? (10 Points)

Task #2: Build a Data table to hold the data that
you will collect. Collect the data from your Lab Area and place the appropriate
information in your chart. (10 points)

Task #3: Determine the density of each metal. Then
use the chart provided to determine the actual identity of the metals. Discuss
in your explanation what each metal is and what scientific evidence you used to
determine the identity of each unknown. (10 points)

- Several liquids are
provided to you in plastic containers. It has been determined that they
each contain
*25*of liquid.*ml***DO NOT OPEN THE CONTAINERS. (An empty container is also provided to you to determine the mass of an empty container.)**Calculate the density of each and determine (based upon density) how these liquids could be “layered” one on top of another.

Task #1: Explain how you would do this activity. (10
points)

Task #2: Build a data table and collect the
necessary data. (10 points)

Task #3: Calculate the density of each liquid and determine which will ** float**
on each other. Place them from most dense to lease dense. Draw a picture of a
test tube. In the test tube draw in each colored liquid where you would find
it. (10 points)

- A piece of metal was
found attached to a string. Determine its mass and volume to the best of
your ability. Then using the chart provided, determine what metal you
have. Explain what you did and how you got your answer. (10 points)

Thirty (30) additional points will be added to your test
score based upon neatness of your paper, clarity of your answers, lab cleanup,
cooperation in your lab area and placing your name on your paper.